memory_get_usage

(PHP 4 >= 4.3.2, PHP 5)

memory_get_usage -- Returns the amount of memory allocated to PHP

Description

int memory_get_usage ( void )

Returns the amount of memory, in bytes, that's currently being allocated to your PHP script.

memory_get_usage() will only be defined if your PHP is compiled with the --enable-memory-limit configuration option.

Example 1. A memory_get_usage() example

<?php
// This is only an example, the numbers below will 
// differ depending on your system

echo memory_get_usage() . "\n"// 36640

$a str_repeat("Hello"4242);

echo 
memory_get_usage() . "\n"// 57960

unset($a);

echo 
memory_get_usage() . "\n"// 36744

?>

See also memory_get_peak_usage() and memory_limit.