(PHP 4 >= 4.3.2, PHP 5, PHP 7)
Returns the amount of memory allocated to PHP
int memory_get_usage ([ bool $real_usage = false ] )
Returns the amount of memory, in bytes, that's currently being allocated to your PHP script.
Parameters:
real_usage
Set this to TRUE
to get total memory allocated from system, including unused pages. If not set or FALSE
only the used memory is reported.
Returns:
Returns the memory amount in bytes.
Changelog:
5.2.1
Compiling with --enable-memory-limit is no longer required for this function to exist.
5.2.0
real_usage
Examples:
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:
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