Prepare Your Code for PHP 9: PHP 8 Deprecations Explained
summary
Overview of concrete PHP 8 deprecations and migration steps: about 325 deprecation messages land each cycle and PHP is consolidating APIs (for example UTF8 encode removed in favor of mbstring, LCG/random replaced by the random extension, and mhash functions retired). Expect behavior changes (resources become objects, curly-brace array access is forbidden, array keys are typed to int|string) and signature changes (fputcsv escape default removed). Suggested fixes include static analysis, polyfills, named parameters, and explicit options like AllowDynamicProperties attribute or extending stdClass.
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chapters (27)
- 0:00PHP 9 preparation intro
- 4:16PHP deprecations in practice
- 7:07Deprecated PHP features
- 8:32PHP 8.3 deprecated functions
- 10:41Random number generator removed
- 12:25FTP resource transitions
- 14:12Assert options removed
- 15:57Gutted features in code
- 18:27Deprecated constants
- 21:35Deprecated classes/interfaces
- 22:42Deprecated variables/operators
- 24:11Deprecated PHP directives
- 27:01Disabled classes/functions removed
- 29:08Assert function changes
- 30:35CSV escape parameter change
- 33:04Modernizing with optional params
- 37:00Typed array keys
- 40:13Dollar-curly-brace syntax
- 42:27Null to string parameters
- 44:35MB string encoding updates
- 47:00Dynamic properties deprecation
- 52:39Nullable parameters fixes
- 54:03False vivification behavior
- 55:28Underscore class name
- 56:31Sort comparison function changes
- 58:18Switch colon to semicolon
- 1:00:05String increment/operators removed
