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Supported Versions and Compatibility

This page lists which historical versions of Xdebug, and with which versions of PHP they could be used.

PHP Version Support

This table lists which historical version of Xdebug to use for older PHP versions. In general, at any point when an Xdebug version is released, it will support the currently supported PHP versions.

Xdebug Version
PHP 7.4
PHP 7.3
PHP 7.2
PHP 7.1
PHP 7.0
PHP 5.6
PHP 5.5
PHP 5.4
PHP 5.3
PHP 5.2

SupportedSecurity FixesUnsupported


Xdebug does work together with the Zend Opcache, albeit with reducued or crippled functionality, as Opcache optimises out information that Xdebug could use.

Xdebug does not work together with other extensions that deal with PHP's internals (DBG, APD, ioncube etc). This is due to compatibility problems with those modules.