PHP Manual: Checks if deprecated

public bool ReflectionFunctionAbstract::isDeprecated()

Checks whether the function is deprecated.

This function has no parameters.

true if it's deprecated, otherwise false

Example #1 ReflectionFunctionAbstract::isDeprecated example

<?php
$rf = new ReflectionFunction('ereg');
var_dump($rf->isDeprecated());
?>

The above example will output:

bool(true)

ReflectionFunctionAbstract::isDeprecated