{"id":3635,"date":"2026-07-16T22:04:53","date_gmt":"2026-07-16T22:04:53","guid":{"rendered":"https:\/\/veerhost.com\/docs\/cpanel\/php-fatal-errors-in-cpanel\/"},"modified":"2026-07-16T22:08:03","modified_gmt":"2026-07-16T22:08:03","slug":"php-fatal-errors-in-cpanel","status":"publish","type":"docs","link":"https:\/\/veerhost.com\/de\/docs\/cpanel\/php-fatal-errors-in-cpanel\/","title":{"rendered":"PHP Fatal Errors in cPanel"},"content":{"rendered":"<p class=\"wp-block-paragraph\">A PHP fatal error occurs when PHP encounters a critical problem that prevents a script from executing. Unlike warnings or notices, fatal errors immediately stop the application, which can result in a blank page, a critical error message, or an HTTP 500 response.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This guide explains the most common causes of PHP fatal errors and provides step-by-step troubleshooting procedures using cPanel.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Overview<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">PHP fatal errors are typically caused by:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Plugin or extension conflicts<\/li>\n\n\n\n<li>Theme compatibility issues<\/li>\n\n\n\n<li>Unsupported PHP versions<\/li>\n\n\n\n<li>Insufficient PHP memory<\/li>\n\n\n\n<li>Corrupted application files<\/li>\n\n\n\n<li>Missing PHP extensions<\/li>\n\n\n\n<li>Incorrect file permissions<\/li>\n\n\n\n<li>Programming errors<\/li>\n\n\n\n<li>Failed software updates<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Resolving the issue usually requires identifying the specific error and correcting the underlying configuration or application problem.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Common Error Messages<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You may encounter one or more of the following errors:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Fatal error: Allowed memory size exhausted<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>Fatal error: Uncaught Error<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>Call to undefined function<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>Maximum execution time exceeded<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>Cannot redeclare function<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>Class not found<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>Parse error<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Viewing PHP Error Logs<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The PHP error log is the best place to begin troubleshooting.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To view recent errors:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Log in to cPanel.<\/li>\n\n\n\n<li>Open <strong>Errors<\/strong> or <strong>Metrics \u2192 Errors<\/strong>.<\/li>\n\n\n\n<li>Review the latest entries.<\/li>\n\n\n\n<li>Identify the affected file, plugin, theme, or script.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Most fatal errors include the filename and line number where the issue occurred.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Enabling PHP Error Reporting<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If the logs do not provide enough information, temporary error reporting can help identify the problem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Add the following code to your PHP application during troubleshooting:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ini_set('display_errors', 1);\nini_set('display_startup_errors', 1);\nerror_reporting(E_ALL);<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">After the issue has been identified, disable error reporting to prevent sensitive information from being displayed publicly.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Increasing the PHP Memory Limit<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Insufficient PHP memory is one of the most common causes of fatal errors.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You can increase the memory limit using the <strong>MultiPHP INI Editor<\/strong> in cPanel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Recommended values include:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>256M<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">or<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>512M<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">If you&#8217;re running WordPress, the memory limit can also be increased through the <code>wp-config.php<\/code> file.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Verifying the PHP Version<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Applications may fail if they are running on an incompatible PHP version.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To verify your current version:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Open <strong>MultiPHP Manager<\/strong> or <strong>Select PHP Version<\/strong>.<\/li>\n\n\n\n<li>Locate the affected domain.<\/li>\n\n\n\n<li>Confirm that the selected PHP version is supported by your application.<\/li>\n\n\n\n<li>Change the version if required.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Using a supported PHP version improves both stability and security.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Checking Required PHP Extensions<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Many PHP applications require specific extensions to function correctly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Common extensions include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>mysqli<\/li>\n\n\n\n<li>mbstring<\/li>\n\n\n\n<li>curl<\/li>\n\n\n\n<li>gd<\/li>\n\n\n\n<li>intl<\/li>\n\n\n\n<li>zip<\/li>\n\n\n\n<li>xml<\/li>\n\n\n\n<li>openssl<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If a required extension is missing, the application may generate fatal errors during execution.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Disabling Recently Installed Plugins<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If the error appeared after installing or updating a plugin, temporarily disable it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For WordPress:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Open <strong>File Manager<\/strong>.<\/li>\n\n\n\n<li>Navigate to:<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>public_html\/wp-content\/plugins\/<\/code><\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>Rename the plugin folder.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Example:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>example-plugin<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">to<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>example-plugin-disabled<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Reload the website to determine whether the plugin is causing the issue.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Switching to a Default Theme<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Theme conflicts can also generate PHP fatal errors.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Navigate to:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public_html\/wp-content\/themes\/<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Rename the active theme folder.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If a default WordPress theme is available, WordPress will activate it automatically.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Replacing Corrupted Application Files<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Interrupted updates or incomplete uploads can damage application files.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For WordPress installations:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Download a fresh copy of WordPress.<\/li>\n\n\n\n<li>Replace the <code>wp-admin<\/code> and <code>wp-includes<\/code> directories.<\/li>\n\n\n\n<li>Do not overwrite the <code>wp-content<\/code> directory or the <code>wp-config.php<\/code> file.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This restores the application&#8217;s core files without affecting website content.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Restoring a Backup<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If the issue began after recent changes, restoring a backup may resolve the problem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Depending on your backup system, you may restore:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Website files<\/li>\n\n\n\n<li>Database<\/li>\n\n\n\n<li>Complete cPanel account<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Always verify that the backup is current before restoring.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Repairing the .htaccess File<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A corrupted <code>.htaccess<\/code> file can interfere with PHP execution.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To test this:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Open <strong>File Manager<\/strong>.<\/li>\n\n\n\n<li>Navigate to your website&#8217;s root directory.<\/li>\n\n\n\n<li>Rename:<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>.htaccess<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">to<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>.htaccess_old<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Reload the website.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If the issue is resolved, generate a new <code>.htaccess<\/code> file.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For WordPress:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Open <strong>Settings \u2192 Permalinks<\/strong><\/li>\n\n\n\n<li>Click <strong>Save Changes<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Reviewing File Permissions<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Incorrect permissions can prevent PHP from accessing required files.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Recommended permission values:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Item<\/th><th>Permission<\/th><\/tr><\/thead><tbody><tr><td>Files<\/td><td>644<\/td><\/tr><tr><td>Directories<\/td><td>755<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Avoid assigning <strong>777<\/strong> permissions, as they introduce security risks and may be blocked by the server.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Contacting Your Hosting Provider<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If the problem persists after completing the above steps, contact your hosting provider.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Provide the following information if available:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Error message<\/li>\n\n\n\n<li>Website URL<\/li>\n\n\n\n<li>Timestamp of the error<\/li>\n\n\n\n<li>PHP version<\/li>\n\n\n\n<li>Recent changes made to the website<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Your hosting provider can review:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PHP error logs<\/li>\n\n\n\n<li>Apache or LiteSpeed logs<\/li>\n\n\n\n<li>Server resource usage<\/li>\n\n\n\n<li>Missing PHP extensions<\/li>\n\n\n\n<li>Account permissions<\/li>\n\n\n\n<li>Server configuration<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These logs often identify the root cause of the fatal error.<\/p>","protected":false},"excerpt":{"rendered":"<p>A PHP fatal error occurs when PHP encounters a critical problem that prevents a script from executing. Unlike warnings or notices, fatal [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":3167,"menu_order":11,"comment_status":"open","ping_status":"closed","template":"","doc_tag":[],"class_list":["post-3635","docs","type-docs","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/veerhost.com\/de\/wp-json\/wp\/v2\/docs\/3635","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/veerhost.com\/de\/wp-json\/wp\/v2\/docs"}],"about":[{"href":"https:\/\/veerhost.com\/de\/wp-json\/wp\/v2\/types\/docs"}],"author":[{"embeddable":true,"href":"https:\/\/veerhost.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/veerhost.com\/de\/wp-json\/wp\/v2\/comments?post=3635"}],"version-history":[{"count":1,"href":"https:\/\/veerhost.com\/de\/wp-json\/wp\/v2\/docs\/3635\/revisions"}],"predecessor-version":[{"id":3637,"href":"https:\/\/veerhost.com\/de\/wp-json\/wp\/v2\/docs\/3635\/revisions\/3637"}],"up":[{"embeddable":true,"href":"https:\/\/veerhost.com\/de\/wp-json\/wp\/v2\/docs\/3167"}],"wp:attachment":[{"href":"https:\/\/veerhost.com\/de\/wp-json\/wp\/v2\/media?parent=3635"}],"wp:term":[{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/veerhost.com\/de\/wp-json\/wp\/v2\/doc_tag?post=3635"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}