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PHP Manual Appendices Migrating from PHP 5.0.x to PHP 5.1.x
Appendices History of PHP and Related Projects Migrating from PHP 5.5.x to PHP 5.6.x Migrating from PHP 5.4.x to PHP 5.5.x Migrating from PHP 5.3.x to PHP 5.4.x Migrating from PHP 5.2.x to PHP 5.3.x Migrating from PHP 5.1.x to PHP 5.2.x Migrating from PHP 5.0.x to PHP 5.1.x Migrating from PHP 4 to PHP 5.0.x Classes and Objects (PHP 4) 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
  • Other Enhancements
  • Key PHP 5.1.x features

Migrating from PHP 5.0.x to PHP 5.1.x

Table of Contents

  • Key PHP 5.1.x features
  • Changes in reference handling
  • Reading []
  • Integer values in function parameters
  • Class and object changes
  • Extensions
  • Date/time support
  • Changes in database support
  • Checking for E_STRICT

See also the migration guides for PHP versions 5.0.x, 5.2.x, 5.3.x, 5.4.x and 5.5.x.

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