In PHP v.5.3.8, memory_get_peak_usage(true) always returns zero (found on Debian Linux).
(PHP 5 >= 5.2.0, PHP 7)
memory_get_peak_usage — Returns the peak of memory allocated by PHP
$real_usage= false ] )
Returns the peak of memory, in bytes, that's been allocated to your PHP script.
Set this to
TRUE to get the real size of memory allocated from
system. If not set or
FALSE only the memory used by
emalloc() is reported.
Returns the memory peak in bytes.
|5.2.1||Compiling with --enable-memory-limit is no longer required for this function to exist.|