{"id":528,"date":"2018-11-12T13:17:18","date_gmt":"2018-11-12T13:17:18","guid":{"rendered":"https:\/\/www.kanhasoft.com\/blog\/?p=528"},"modified":"2026-02-04T13:12:28","modified_gmt":"2026-02-04T13:12:28","slug":"its-time-to-upgrade-from-php-5-to-php-7","status":"publish","type":"post","link":"https:\/\/kanhasoft.com\/blog\/its-time-to-upgrade-from-php-5-to-php-7\/","title":{"rendered":"It&#8217;s Time to Upgrade from PHP 5 to PHP 7"},"content":{"rendered":"<p data-start=\"565\" data-end=\"1183\">At Kanhasoft, we\u2019ve seen more than our fair share of legacy PHP apps clinging to life like that old laptop in the corner of the office (you know the one). That\u2019s why we\u2019re saying it plainly: if you\u2019re still running on PHP\u202f5, the time for a PHP 5 to PHP 7 Upgrade isn\u2019t tomorrow\u2014it\u2019s now.<\/p>\n<p data-start=\"565\" data-end=\"1183\">In the world of <a href=\"https:\/\/kanhasoft.com\/php-application-development.html\">PHP Application Development<\/a>, there\u2019s no prize for \u201cmost graceful legacy hang\u2011on\u201d (despite how nostalgic we might feel). So let\u2019s dive into <em data-start=\"1016\" data-end=\"1021\">why<\/em> this matters, <em data-start=\"1036\" data-end=\"1041\">how<\/em> you do it (yes, we\u2019ll even walk through a step\u2011by\u2011step PHP upgrade tutorial), and <em data-start=\"1128\" data-end=\"1152\">what you stand to gain<\/em> when you leave PHP\u202f5 behind.<\/p>\n<h2 data-start=\"1190\" data-end=\"1240\">PHP\u202f5 to PHP\u202f7 upgrade \u2014 Why the urgency?<\/h2>\n<p data-start=\"1241\" data-end=\"2091\">First off: yes, <strong data-start=\"1257\" data-end=\"1278\">PHP\u202f5 end of life<\/strong> has been a thing for a while. But many organisations (and we\u2019re not pointing fingers\u2014okay, maybe a little) still run important applications on it. Maybe it \u201cjust works\u201d, maybe the budget says \u201cwe\u2019ll fix it later\u201d, or maybe someone\u2019s nostalgic for the days of mysql_query without PDO. Yet the cost of staying put is growing by the day: performance bottlenecks, security risks, compatibility issues, and technical debt mounting like dirty dishes in a dev\u2011studio kitchen.<\/p>\n<p data-start=\"1241\" data-end=\"2091\">At Kanhasoft we believe that <a href=\"https:\/\/kanhasoft.com\/php-application-development.html\"><strong data-start=\"1779\" data-end=\"1802\">PHP App Development<\/strong><\/a> deserves better. If your platform is stuck in PHP\u202f5 you\u2019re essentially putting a modern car engine into a horse\u2011carriage body\u2014and expecting it to fly. It won\u2019t. So let\u2019s talk about why you should upgrade to PHP\u202f7, what hurdles you\u2019ll face, and how we handle them (yes, anecdotes ahead).<\/p>\n<h2 data-start=\"2098\" data-end=\"2158\">Why upgrade to PHP\u202f7? Performance, security &amp; modernity<\/h2>\n<p data-start=\"2159\" data-end=\"2325\">Let\u2019s cut to the chase: upgrading to PHP\u202f7 isn\u2019t just \u201cnice to have\u201d\u2014it\u2019s a strategic move in the modern digital age. Here are the key benefits of upgrading to PHP\u202f7:<\/p>\n<ul data-start=\"2327\" data-end=\"3754\">\n<li data-start=\"2327\" data-end=\"2605\">\n<p data-start=\"2329\" data-end=\"2605\"><strong data-start=\"2329\" data-end=\"2351\">Speed improvements<\/strong>: PHP\u202f7 introduces a new Zend Engine which delivers significant performance wins (we\u2019re talking up to twice as fast in some cases). That translates to faster page loads, happier users, and fewer \u201cwhy is this so slow?\u201d complaints from the business team.<\/p>\n<\/li>\n<li data-start=\"2606\" data-end=\"2780\">\n<p data-start=\"2608\" data-end=\"2780\"><strong data-start=\"2608\" data-end=\"2631\">Better memory usage<\/strong>: Efficiency matters. With PHP\u202f7 your app uses less memory, which means your infrastructure costs drop (or you can scale more for the same budget).<\/p>\n<\/li>\n<li data-start=\"2781\" data-end=\"2994\">\n<p data-start=\"2783\" data-end=\"2994\"><strong data-start=\"2783\" data-end=\"2805\">Security &amp; support<\/strong>: PHP\u202f5 no longer receives official security patches. Leaving critical systems on it is a risk\u2014avoidable. Upgrading means you\u2019re back in the realm of supported, maintained, modern stacks.<\/p>\n<\/li>\n<li data-start=\"2995\" data-end=\"3269\">\n<p data-start=\"2997\" data-end=\"3269\"><strong data-start=\"2997\" data-end=\"3025\">Modern syntax &amp; features<\/strong>: PHP\u202f7 brings scalar type hints, return type declarations, null coalescing operator (<code data-start=\"3111\" data-end=\"3115\">??<\/code>), spaceship operator (<code data-start=\"3138\" data-end=\"3143\">&lt;=&gt;<\/code>), improved error handling (hello throwable!), and other goodies. That means cleaner, more maintainable code for your teams.<\/p>\n<\/li>\n<li data-start=\"3270\" data-end=\"3446\">\n<p data-start=\"3272\" data-end=\"3446\"><strong data-start=\"3272\" data-end=\"3325\">Compatibility with newer libraries and frameworks<\/strong>: Many <a href=\"https:\/\/www.php.net\/\">PHP<\/a> libraries now assume PHP\u202f7+ (or even PHP\u202f7.4+). If you stay on PHP\u202f5 you\u2019re locked out of modern ecosystems.<\/p>\n<\/li>\n<li data-start=\"3447\" data-end=\"3754\">\n<p data-start=\"3449\" data-end=\"3754\"><strong data-start=\"3449\" data-end=\"3476\">Better developer morale<\/strong>: Yes, it\u2019s a subtle benefit, but we\u2019ve seen it: developers working on legacy stacks tend to dread features, bug\u2011fixes, and deployments. Giving them a modern stack boosts motivation, productivity, and yes, fewer late\u2011night debug sessions over \u201cWhy didn\u2019t that function exist?\u201d<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3756\" data-end=\"3903\">In short: staying on PHP\u202f5 is like running your business in last year\u2019s model\u2014but expecting world\u2011class performance. Doesn\u2019t make sense, does it?<\/p>\n<h2 data-start=\"3910\" data-end=\"3976\">Upgrade legacy PHP applications: what we\u2019ve seen at Kanhasoft<\/h2>\n<p data-start=\"3977\" data-end=\"4556\">Over the years at <a href=\"https:\/\/kanhasoft.com\/\">Kanhasoft<\/a>, we\u2019ve migrated dozens of legacy systems\u2014yes, including ones running on PHP\u202f5 (and sometimes even earlier). One memorable case: a client whose inventory management system was still using PHP\u202f5.3, pre\u2011namespaces, <code data-start=\"4217\" data-end=\"4226\">mysql_*<\/code> functions, and spaghetti code that made our engineers weep (okay, not literally\u2014but near it). We told them: \u201cWe can improve this\u2014but first we\u2019ll upgrade the engine.\u201d After the <strong data-start=\"4403\" data-end=\"4429\">PHP\u202f5 to PHP\u202f7 upgrade<\/strong>, the system ran 60% faster, outages dropped, and the team finally felt they could innovate instead of just keep the lights on.<\/p>\n<p data-start=\"4558\" data-end=\"4576\">What did we learn?<\/p>\n<ul data-start=\"4578\" data-end=\"5333\">\n<li data-start=\"4578\" data-end=\"4756\">\n<p data-start=\"4580\" data-end=\"4756\">The biggest risk isn\u2019t the upgrade itself\u2014it\u2019s <em data-start=\"4627\" data-end=\"4656\">assuming nothing will break<\/em>. Spoiler: something will. But with proper testing, phasing, fallback plans, we\u2019ve made it smooth.<\/p>\n<\/li>\n<li data-start=\"4757\" data-end=\"4909\">\n<p data-start=\"4759\" data-end=\"4909\">Code audit is vital. You\u2019ve got to find deprecated functions (e.g., <code data-start=\"4827\" data-end=\"4840\">mysql_query<\/code>, <code data-start=\"4842\" data-end=\"4848\">ereg<\/code>, etc.), check compatibility, take inventory of extensions.<\/p>\n<\/li>\n<li data-start=\"4910\" data-end=\"5058\">\n<p data-start=\"4912\" data-end=\"5058\">Incremental migration often wins. You don\u2019t have to flip the switch in one go\u2014especially for large systems. Start modules, stage upgrades, test.<\/p>\n<\/li>\n<li data-start=\"5059\" data-end=\"5206\">\n<p data-start=\"5061\" data-end=\"5206\">Communication matters. The business side needs to be aware: yes, we\u2019re doing the upgrade, and yes, there may be hiccups\u2014but the payoff is real.<\/p>\n<\/li>\n<li data-start=\"5207\" data-end=\"5333\">\n<p data-start=\"5209\" data-end=\"5333\">The ROI is quicker than you think. Faster app, fewer crashes, less maintenance time. That time saved pays for the upgrade.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"5335\" data-end=\"5483\">Because at the end of the day: we innovate, integrate, inspire (as our motto goes at Kanhasoft) \u2014 and upgrading your foundation is the bedrock step.<\/p>\n<h2 data-start=\"5490\" data-end=\"5565\">How to upgrade from PHP\u202f5 to PHP\u202f7 (step\u2011by\u2011step PHP upgrade tutorial)<\/h2>\n<p data-start=\"5566\" data-end=\"5766\">Okay, buckle in\u2014here\u2019s the practical path we follow at <a href=\"https:\/\/kanhasoft.com\/qa-testing.html\">Kanhasoft<\/a> when doing a PHP\u202f5 to PHP\u202f7 upgrade in the realm of <a href=\"https:\/\/kanhasoft.com\/php-application-development.html\">PHP App Development<\/a>. Every project is unique, but the framework remains consistent.<\/p>\n<table>\n<thead>\n<tr>\n<th>Step<\/th>\n<th>Description<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Audit &amp; assessment<\/strong><\/td>\n<td>Review your current PHP version, extensions, codebase, dependencies, incompatible modules, third\u2011party libraries.<\/td>\n<\/tr>\n<tr>\n<td><strong>Identify deprecated features<\/strong><\/td>\n<td><code inline=\"\">mysql_*<\/code> functions, old <code inline=\"\">ereg<\/code> regex, <code inline=\"\">split()<\/code>, some constructors, etc. Also check for removed or changed behaviours.<\/td>\n<\/tr>\n<tr>\n<td><strong>Setup development environment<\/strong><\/td>\n<td>Clone your system, upgrade PHP to target version (e.g., 7.4 or 8.0 if ending soon), run tests, fix broken code.<\/td>\n<\/tr>\n<tr>\n<td><strong>Refactor<\/strong><\/td>\n<td>Replace deprecated functionality, apply modern syntax features where appropriate, update libraries\/frameworks.<\/td>\n<\/tr>\n<tr>\n<td><strong>Test thoroughly<\/strong><\/td>\n<td>Unit tests, integration tests, performance benchmarking, user\u2011acceptance tests. Remember: what worked in PHP\u202f5 might behave differently in PHP\u202f7.<\/td>\n<\/tr>\n<tr>\n<td><strong>Stage deployment<\/strong><\/td>\n<td>First deploy to a staging\/prod\u2011mirror environment; monitor logs, errors, memory usage, performance.<\/td>\n<\/tr>\n<tr>\n<td><strong>Go live &amp; monitor<\/strong><\/td>\n<td>After confidence, deploy to production. Monitor closely for unusual errors, regressions, performance dips.<\/td>\n<\/tr>\n<tr>\n<td><strong>Post\u2011deployment cleanup<\/strong><\/td>\n<td>Remove old compatibility layers, deprecated extensions, orphaned code. Update your documentation &amp; DevOps processes.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p data-start=\"6984\" data-end=\"7008\">Important transitions:<\/p>\n<ul data-start=\"7009\" data-end=\"7449\">\n<li data-start=\"7009\" data-end=\"7085\">\n<p data-start=\"7011\" data-end=\"7085\">We recommend moving to PHP\u202f7.4 (for stability) and then planning PHP\u202f8+.<\/p>\n<\/li>\n<li data-start=\"7086\" data-end=\"7147\">\n<p data-start=\"7088\" data-end=\"7147\">Back up everything before you proceed\u2014yes, we\u2019re serious.<\/p>\n<\/li>\n<li data-start=\"7148\" data-end=\"7219\">\n<p data-start=\"7150\" data-end=\"7219\">Use feature toggles or phased rollout if you have large user bases.<\/p>\n<\/li>\n<li data-start=\"7220\" data-end=\"7326\">\n<p data-start=\"7222\" data-end=\"7326\">Engage your QA and users early\u2014sometimes unexpected deprecated functions live deep in obscure modules.<\/p>\n<\/li>\n<li data-start=\"7327\" data-end=\"7449\">\n<p data-start=\"7329\" data-end=\"7449\">Performance test under realistic conditions\u2014just because the dev version looked fine doesn\u2019t guarantee production scale.<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"7456\" data-end=\"7515\">PHP\u202f5 compatibility issues with PHP\u202f7: common pitfalls<\/h2>\n<p data-start=\"7516\" data-end=\"7668\">No sugar\u2011coating here: upgrading can surface unexpected issues. Here\u2019s what we regularly encounter in our <a href=\"https:\/\/kanhasoft.com\/php-application-development.html\">PHP Application Development<\/a> work at Kanhasoft:<\/p>\n<ul data-start=\"7670\" data-end=\"8934\">\n<li data-start=\"7670\" data-end=\"7796\">\n<p data-start=\"7672\" data-end=\"7796\"><strong data-start=\"7672\" data-end=\"7706\">Removed functions \/ extensions<\/strong>: e.g., <code data-start=\"7714\" data-end=\"7723\">mysql_*<\/code> functions removed in PHP\u202f7.0; <code data-start=\"7754\" data-end=\"7760\">ereg<\/code> removed; <code data-start=\"7770\" data-end=\"7778\">mcrypt<\/code> deprecated etc.<\/p>\n<\/li>\n<li data-start=\"7797\" data-end=\"7909\">\n<p data-start=\"7799\" data-end=\"7909\"><strong data-start=\"7799\" data-end=\"7823\">Changes in behaviour<\/strong>: For example, certain array functions, object handling, type coercion might differ.<\/p>\n<\/li>\n<li data-start=\"7910\" data-end=\"8027\">\n<p data-start=\"7912\" data-end=\"8027\"><strong data-start=\"7912\" data-end=\"7940\">Fatal errors vs warnings<\/strong>: PHP\u202f7 is stricter in some cases\u2014what used to be a warning may now be a fatal error.<\/p>\n<\/li>\n<li data-start=\"8028\" data-end=\"8140\">\n<p data-start=\"8030\" data-end=\"8140\"><strong data-start=\"8030\" data-end=\"8071\">Namespaces &amp; class autoloading quirks<\/strong>: Older code may rely on manual requires instead of Composer\/PSR\u20114.<\/p>\n<\/li>\n<li data-start=\"8141\" data-end=\"8366\">\n<p data-start=\"8143\" data-end=\"8366\"><strong data-start=\"8143\" data-end=\"8170\">Performance regressions<\/strong>: Rare, but possible\u2014especially if your code used weird workarounds for PHP\u202f5 limitations. When you upgrade, some of those workarounds may break or become unnecessary\u2014but you still have to test.<\/p>\n<\/li>\n<li data-start=\"8367\" data-end=\"8529\">\n<p data-start=\"8369\" data-end=\"8529\"><strong data-start=\"8369\" data-end=\"8406\">Third\u2011party library compatibility<\/strong>: If you\u2019re using a plugin or library that hasn\u2019t been maintained (and still expects PHP\u202f5), you may need to swap it out.<\/p>\n<\/li>\n<li data-start=\"8530\" data-end=\"8699\">\n<p data-start=\"8532\" data-end=\"8699\"><strong data-start=\"8532\" data-end=\"8565\">Database drivers \/ extensions<\/strong>: The <code data-start=\"8571\" data-end=\"8578\">mysql<\/code> extension is gone; <code data-start=\"8598\" data-end=\"8606\">mysqli<\/code> or PDO must be used. Also, verify version compatibility of related modules and frameworks.<\/p>\n<\/li>\n<li data-start=\"8700\" data-end=\"8818\">\n<p data-start=\"8702\" data-end=\"8818\"><strong data-start=\"8702\" data-end=\"8723\">Memory\/GC changes<\/strong>: Some garbage\u2011collection behaviour in PHP\u202f7 is different\u2014monitor memory usage after upgrade.<\/p>\n<\/li>\n<li data-start=\"8819\" data-end=\"8934\">\n<p data-start=\"8821\" data-end=\"8934\"><strong data-start=\"8821\" data-end=\"8856\">Time zone and locale subtleties<\/strong>: Yeah, odd things can happen with old code assuming PHP\u202f5 default behaviours.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"8936\" data-end=\"9149\">By anticipating these, we at <a href=\"https:\/\/kanhasoft.com\">Kanhasoft<\/a> build a migration checklist for each <strong data-start=\"9012\" data-end=\"9033\">PHP upgrade guide<\/strong> we craft internally. That makes the actual upgrade smoother\u2014and less \u201coh\u2011no\u2011watch\u2011out\u2011what\u2011did\u2011we\u2011break\u201d stressful.<\/p>\n<h2 data-start=\"9156\" data-end=\"9214\">Benefits of upgrading to PHP\u202f7: real gains you\u2019ll see<\/h2>\n<p data-start=\"9215\" data-end=\"9461\">We\u2019ve touched on this already, but let\u2019s put it into tangible business terms (since yes, we still talk to non\u2011dev stakeholders too). Here\u2019s what clients see when we complete a PHP\u202f5 to PHP\u202f7 upgrade under our <a href=\"https:\/\/kanhasoft.com\/php-application-development.html\">PHP Application Development services<\/a>:<\/p>\n<ul data-start=\"9463\" data-end=\"10039\">\n<li data-start=\"9463\" data-end=\"9531\">\n<p data-start=\"9465\" data-end=\"9531\">Lower server costs (due to better memory &amp; execution efficiency)<\/p>\n<\/li>\n<li data-start=\"9532\" data-end=\"9610\">\n<p data-start=\"9534\" data-end=\"9610\">Faster response times \u2192 improved user experience \u2192 better conversion rates<\/p>\n<\/li>\n<li data-start=\"9611\" data-end=\"9672\">\n<p data-start=\"9613\" data-end=\"9672\">Fewer outages or bugs caused by outdated engine behaviour<\/p>\n<\/li>\n<li data-start=\"9673\" data-end=\"9763\">\n<p data-start=\"9675\" data-end=\"9763\">Easier hiring of developers (they prefer modern stacks) \u2192 long\u2011term productivity gains<\/p>\n<\/li>\n<li data-start=\"9764\" data-end=\"9838\">\n<p data-start=\"9766\" data-end=\"9838\">Access to newer libraries, frameworks, tools \u2192 faster feature delivery<\/p>\n<\/li>\n<li data-start=\"9839\" data-end=\"9956\">\n<p data-start=\"9841\" data-end=\"9956\">Better security posture \u2192 lower risk profile (important for compliance, especially in UK\/USA\/Israel\/UAE contexts)<\/p>\n<\/li>\n<li data-start=\"9957\" data-end=\"10039\">\n<p data-start=\"9959\" data-end=\"10039\">Reduced maintenance burden \u2192 more time for innovation rather than firefighting<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"10041\" data-end=\"10318\">In other words: upgrading is not just a cost\u2014it\u2019s investment. At Kanhasoft we often say: \u201cDon\u2019t just keep the lights on\u2014upgrade the wiring.\u201d Because when you\u2019re building <strong data-start=\"10211\" data-end=\"10234\">PHP App Development<\/strong> solutions for the modern market, you can\u2019t afford to drag legacy weight behind you.<\/p>\n<h2 data-start=\"10325\" data-end=\"10387\">Step\u2011by\u2011step PHP upgrade tutorial (for small\/medium apps)<\/h2>\n<p data-start=\"10388\" data-end=\"10543\">If you have a small to medium sized app (say one codebase, one database, not a huge micro\u2011services cluster), here\u2019s the condensed path we use at Kanhasoft:<\/p>\n<ol data-start=\"10545\" data-end=\"11716\">\n<li data-start=\"10545\" data-end=\"10647\">\n<p data-start=\"10548\" data-end=\"10647\">Clone the production environment locally or on a staging server (same PHP\u202f5 version if possible).<\/p>\n<\/li>\n<li data-start=\"10648\" data-end=\"10741\">\n<p data-start=\"10651\" data-end=\"10741\">Switch the PHP version on staging to PHP\u202f7.x (we pick 7.4 for max support before PHP\u202f8).<\/p>\n<\/li>\n<li data-start=\"10742\" data-end=\"10820\">\n<p data-start=\"10745\" data-end=\"10820\">Run <code data-start=\"10749\" data-end=\"10766\">composer update<\/code> (if applicable) and identify incompatible packages.<\/p>\n<\/li>\n<li data-start=\"10821\" data-end=\"10936\">\n<p data-start=\"10824\" data-end=\"10936\">Search codebase for deprecated patterns: <code data-start=\"10865\" data-end=\"10878\">mysql_query<\/code>, <code data-start=\"10880\" data-end=\"10889\">split()<\/code>, old constructors (same name as class), etc.<\/p>\n<\/li>\n<li data-start=\"10937\" data-end=\"11027\">\n<p data-start=\"10940\" data-end=\"11027\">Replace with modern equivalents: mysqli \/ PDO, use namespaces, fix class autoloading.<\/p>\n<\/li>\n<li data-start=\"11028\" data-end=\"11149\">\n<p data-start=\"11031\" data-end=\"11149\">Run unit tests (if you have them); if not, create smoke tests for critical flows (login, data entry, API endpoints).<\/p>\n<\/li>\n<li data-start=\"11150\" data-end=\"11248\">\n<p data-start=\"11153\" data-end=\"11248\">Measure performance: baseline PHP\u202f5 times vs PHP\u202f7 times. Capture memory usage, request time.<\/p>\n<\/li>\n<li data-start=\"11249\" data-end=\"11360\">\n<p data-start=\"11252\" data-end=\"11360\">Fix performance hotspots. Example: maybe a function used by 90\u202f% of requests has changed in PHP\u202f7\u2014tune it.<\/p>\n<\/li>\n<li data-start=\"11361\" data-end=\"11468\">\n<p data-start=\"11364\" data-end=\"11468\">Stage deploy: choose a small percentage of users (feature toggle) if multi\u2011tenant, monitor error logs.<\/p>\n<\/li>\n<li data-start=\"11469\" data-end=\"11528\">\n<p data-start=\"11473\" data-end=\"11528\">After 24\u201348\u202fhours of zero major issues, full rollout.<\/p>\n<\/li>\n<li data-start=\"11529\" data-end=\"11645\">\n<p data-start=\"11533\" data-end=\"11645\">Cleanup: remove old compatibility layers, update documentation, set PHP\u202f7 as baseline for future feature work.<\/p>\n<\/li>\n<li data-start=\"11646\" data-end=\"11716\">\n<p data-start=\"11650\" data-end=\"11716\">Celebrate (cup of coffee, maybe \u2014 we find devs appreciate this).<\/p>\n<\/li>\n<\/ol>\n<h2 data-start=\"11723\" data-end=\"11777\">PHP upgrade guide: when not to rush \u2014 the caveats<\/h2>\n<p data-start=\"11778\" data-end=\"11901\">Just to keep things real: there are scenarios where you might delay or plan more cautiously. At <a href=\"https:\/\/kanhasoft.com\">Kanhasoft<\/a> we always assess:<\/p>\n<ul data-start=\"11903\" data-end=\"12642\">\n<li data-start=\"11903\" data-end=\"12037\">\n<p data-start=\"11905\" data-end=\"12037\">If the system is mission\u2011critical and downtime is hugely costly, you must plan very carefully (maintenance window, rollback plan).<\/p>\n<\/li>\n<li data-start=\"12038\" data-end=\"12205\">\n<p data-start=\"12040\" data-end=\"12205\">If you rely heavily on unsupported third\u2011party code that must itself be upgraded (and vendor support is dead), you may need a rewrite rather than a simple upgrade.<\/p>\n<\/li>\n<li data-start=\"12206\" data-end=\"12323\">\n<p data-start=\"12208\" data-end=\"12323\">If your team lacks test coverage, jumping straight to PHP\u202f7 might introduce hidden bugs. Build test suites first.<\/p>\n<\/li>\n<li data-start=\"12324\" data-end=\"12460\">\n<p data-start=\"12326\" data-end=\"12460\">If the budget or timeline is tight, you might phase the upgrade (e.g., move to PHP\u202f7, then later to PHP\u202f8) rather than both at once.<\/p>\n<\/li>\n<li data-start=\"12461\" data-end=\"12642\">\n<p data-start=\"12463\" data-end=\"12642\">If you run on a hosting environment that doesn\u2019t support PHP\u202f7 (rare nowadays, but possible in some legacy VPS or specialized appliances) you\u2019ll need infrastructure updates first.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"12644\" data-end=\"12777\">So yes\u2014we\u2019re enthusiastic about the upgrade\u2014but also pragmatic. We don\u2019t just say \u201cdo it\u201d and walk away; we say \u201cyes, do it\u2014smartly\u201d.<\/p>\n<h2 data-start=\"12784\" data-end=\"12844\">How to upgrade from PHP\u202f5 to PHP\u202f7: a Kanhasoft wrap\u2011up<\/h2>\n<p data-start=\"12845\" data-end=\"13512\">Alright\u2014so you\u2019ve heard the reasons, seen the steps, and know the risks. Here\u2019s the take\u2011away: If you\u2019re still using PHP\u202f5, you\u2019re living in a tech\u2011era past its prime. For modern PHP Application Development you want fast, secure, maintainable, and scalable. PHP\u202f7 delivers that <a href=\"https:\/\/kanhasoft.com\/hire-php-developers.html\">hire PHP developers<\/a>.<br data-start=\"13156\" data-end=\"13159\" \/>The path isn\u2019t always trivial\u2014but with the right approach (audit, refactor, test, deploy) it becomes manageable\u2014and the payoff is real. At Kanhasoft we\u2019ve helped clients across the USA, UK, Israel, UAE and beyond modernise their stacks, leave behind legacy drag, and free their teams to build the next big thing instead of just firefighting the old one.<\/p>\n<h2 data-start=\"0\" data-end=\"16\"><a href=\"https:\/\/kanhasoft.com\/contact-us.html\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kanhasoft.com\/blog\/wp-content\/uploads\/2018\/01\/Unlock-the-Power-of-Your-Business-for-Digital-Success.png\" alt=\"Unlock the Power of Your Business for Digital Success\" width=\"1000\" height=\"250\" class=\"aligncenter size-full wp-image-3732\" srcset=\"https:\/\/kanhasoft.com\/blog\/wp-content\/uploads\/2018\/01\/Unlock-the-Power-of-Your-Business-for-Digital-Success.png 1000w, https:\/\/kanhasoft.com\/blog\/wp-content\/uploads\/2018\/01\/Unlock-the-Power-of-Your-Business-for-Digital-Success-300x75.png 300w, https:\/\/kanhasoft.com\/blog\/wp-content\/uploads\/2018\/01\/Unlock-the-Power-of-Your-Business-for-Digital-Success-768x192.png 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/a>Conclusion : PHP 5 to PHP 7<\/h2>\n<p data-start=\"18\" data-end=\"337\">At Kanhasoft, we\u2019ve always championed progress\u2014not for the sake of chasing trends, but because staying current ensures resilience, scalability, and security. The <strong data-start=\"180\" data-end=\"206\">PHP\u202f5 to PHP\u202f7 upgrade<\/strong> isn\u2019t just another technical checkbox\u2014it\u2019s a fundamental leap forward in how modern web applications perform, scale, and evolve.<\/p>\n<p data-start=\"339\" data-end=\"644\">Let\u2019s be real: legacy systems can be comforting, like an old hoodie. But eventually, they wear thin and stop protecting you from the elements. Likewise, clinging to <strong data-start=\"504\" data-end=\"513\">PHP\u202f5<\/strong> may feel safe, but it\u2019s a false sense of security\u2014riddled with vulnerabilities, sluggish performance, and development dead ends.<\/p>\n<p data-start=\"646\" data-end=\"1060\">By upgrading to <strong data-start=\"662\" data-end=\"671\">PHP\u202f7<\/strong>, you open the door to future-proof <a href=\"https:\/\/kanhasoft.com\/php-application-development.html\">PHP Application Development<\/a>. You empower your development team, impress your users, and reassure your stakeholders. Whether you&#8217;re in the bustling startup scenes of the USA, the innovation hubs of Israel, the compliance\u2011driven markets of the UK and Switzerland, or the rapidly scaling ecosystems of the UAE\u2014modernization is no longer optional.<\/p>\n<h2 data-start=\"13519\" data-end=\"13528\">FAQs : PHP 5 to PHP 7<\/h2>\n<p data-start=\"13529\" data-end=\"13822\"><strong data-start=\"13529\" data-end=\"13576\">Q. What happens if I don\u2019t upgrade from PHP\u202f5?<\/strong><br data-start=\"13576\" data-end=\"13579\" \/><strong>A. <\/strong>You\u2019ll continue to face increasing risk: security vulnerabilities (no patches), performance limitations, difficulty finding compatible libraries, higher maintenance costs\u2014and you may struggle to hire developers comfortable with archaic stacks.<\/p>\n<p data-start=\"13824\" data-end=\"14102\"><strong data-start=\"13824\" data-end=\"13871\">Q. Can I upgrade directly from PHP\u202f5 to PHP\u202f8?<\/strong><br data-start=\"13871\" data-end=\"13874\" \/><strong>A. <\/strong>In some cases yes\u2014but we recommend a staged approach (PHP\u202f7 first) because many compatibility issues have been ironed out in moving to PHP\u202f7. Jumping to PHP\u202f8 may add additional complexity. At Kanhasoft we evaluate case\u2011by\u2011case.<\/p>\n<p data-start=\"14104\" data-end=\"14362\"><strong data-start=\"14104\" data-end=\"14160\">Q. How long does a typical PHP\u202f5 to PHP\u202f7 upgrade take?<\/strong><br data-start=\"14160\" data-end=\"14163\" \/><strong>A. <\/strong>Depends on size and complexity: small apps might be upgraded in a few weeks; larger enterprise systems can take months (including audit, refactor, testing). Budget time for planning and monitoring.<\/p>\n<p data-start=\"14364\" data-end=\"14619\"><strong data-start=\"14364\" data-end=\"14431\">Q. Will my application look or behave differently after upgrading?<\/strong><br data-start=\"14431\" data-end=\"14434\" \/><strong>A. <\/strong>Functionally, it should behave the same (or better). But you\u2019ll likely see faster response times, less memory usage, fewer errors, and be positioned to deliver new features more easily.<\/p>\n<p data-start=\"14621\" data-end=\"14878\"><strong data-start=\"14621\" data-end=\"14663\">Q. Are there cost savings from upgrading?<\/strong><br data-start=\"14663\" data-end=\"14666\" \/><strong>A. <\/strong>Yes: lower hosting\/infrastructure costs (due to improved efficiency), reduced maintenance overhead, fewer downtime incidents, better developer productivity, and access to modern tools that speed feature delivery.<\/p>\n<p data-start=\"14880\" data-end=\"15165\"><strong data-start=\"14880\" data-end=\"14942\">Q. Do I need to rewrite my entire application when upgrading?<\/strong><br data-start=\"14942\" data-end=\"14945\" \/><strong>A. <\/strong>Not always. Many migrations are upgrades with refactoring. However, if the codebase is extremely outdated, poorly maintained, or heavily reliant on unsupported third\u2011party modules, a rewrite might be more cost\u2011effective.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>At Kanhasoft, we\u2019ve seen more than our fair share of legacy PHP apps clinging to life like that old laptop in the corner of the office (you know the one). That\u2019s why we\u2019re saying it plainly: if you\u2019re still running on PHP\u202f5, the time for a PHP 5 to PHP <a href=\"https:\/\/kanhasoft.com\/blog\/its-time-to-upgrade-from-php-5-to-php-7\/\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":3,"featured_media":4605,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-528","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php-development"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PHP 5 to PHP 7 Upgradation for PHP Application Development<\/title>\n<meta name=\"description\" content=\"It\u2019s time to upgrade from PHP\u202f5 to PHP\u202f7\u2014boost your PHP application development with modern performance, security, and compatibility.\" \/>\n<meta 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