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<?php class Test { private $array = []; public function __construct() { $i = 0; while ($i < 10) { $this->array[$i] = str_repeat(" ", 1e6); $i++; } } public function &variables() { return $this->array; } } echo xdebug_memory_usage() . "\n"; $test = new Test(); echo xdebug_memory_usage() . "\n"; $vars = $test->variables(); echo xdebug_memory_usage() . "\n"; array_search("test", $vars); echo xdebug_memory_usage() . "\n"; //echo xdebug_debug_zval("vars") . "\n";
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function xdebug_memory_usage() in /in/nOi4Y:20 Stack trace: #0 {main} thrown in /in/nOi4Y on line 20
Process exited with code 255.

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