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PHP Manual Appendices History of PHP and Related Projects About manual examples Migrating from PHP 8.5.x to PHP 8.6.x Migrating from PHP 8.4.x to PHP 8.5.x Migrating from PHP 8.3.x to PHP 8.4.x Migrating from PHP 8.2.x to PHP 8.3.x Migrating from PHP 8.1.x to PHP 8.2.x Migrating from PHP 8.0.x to PHP 8.1.x Migrating from PHP 7.4.x to PHP 8.0.x Migrating from PHP 7.3.x to PHP 7.4.x Migrating from PHP 7.2.x to PHP 7.3.x Migrating from PHP 7.1.x to PHP 7.2.x Migrating from PHP 7.0.x to PHP 7.1.x Migrating from PHP 5.6.x to PHP 7.0.x Migrating from PHP 5.5.x to PHP 5.6.x Debugging in PHP Configure options php.ini directives Extension List/Categorization List of Function Aliases List of Reserved Words List of Resource Types List of Available Filters List of Supported Socket Transports PHP type comparison tables List of Parser Tokens Userland Naming Guide About the manual Creative Commons Attribution 3.0 Index listing Changelog   New global constants About debugging in PHP Appendices Last updated: Mon, 26 Oct 2026 Debugging in PHP Table of Contents About debugging in PHP New global constants About debugging in PHP Appendices Last updated: Mon, 26 Oct 2026

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