(PHP 5 >= 5.5.0, PHP 7) Serialize callback

(PHP 5 <= 5.0.4) Check the PHP syntax of (and execute) the specified file

(PHP 4, PHP 5, PHP 7)

Examples: PHP supports one execution operator: backticks (``). Note that these are not single-quotes! PHP will attempt

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Server and execution environment information

Examples: To create a new

(PHP 4, PHP 5, PHP 7) Syntax highlighting of a file

Examples: Final methods example PHP 5 introduces the final keyword, which prevents

PHP Archive The phar:// stream wrapper is available since PHP 5.3.0. See Phar stream

Examples: property declarations Class member variables are called "properties"