PHP Script to Benchmark Memory Consumtion on Common Array / Object / String Memory Consumption

mem-consumption-tests.php

<?php

ini_set('memory_limit', '1024M');

function test(){

	$index = 0;
	
	//Case 1
	$a = '';
	for ($i=0; $i<1000000; $i++) $a .= '1';
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 1.50 (php), 3.5 (hhvm), 1.50 (phpng)

	//Case 2
	$a = array();
	for ($i=0; $i<1000000; $i++) $a[$i] = true;
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 138.25 (php), 30.4 (hhvm), 32.75 (phpng)

	//Case 3
	$a = new stdclass;
	for ($i=0; $i<1000000; $i++) $a->$i = true;
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 146.25 (php), 80.92 (hhvm), 82.50 (phpng)

	//Case 4
	$a = new SplFixedArray(1000000);
	for ($i=0; $i<1000000; $i++) $a[$i] = true;
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 54.25 (php), 30.56 (hhvm), 16.50 (phpng)

	//Case 5
	$a = array();
	for ($i=0; $i<1000000; $i++) $a[$i] = $i;
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 138.50 (php), 30.56 (hhvm), 33.25 (phpng)

	//Case 6
	$a = new stdclass;
	for ($i=0; $i<1000000; $i++) $a->$i = $i;
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 146 (php), 80.97 (hhvm), 82.50 (phpng)

	//Case 7
	$a = new SplFixedArray(1000000);
	for ($i=0; $i<1000000; $i++) $a[$i] = $i;
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 54.25 (php), 30.58 (hhvm), 16.75 (phpng)

	//Case 8
	$a = array();
	for ($i=0; $i<1000000; $i++) $a[$i] = (string)$i;
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 230 (php), 61.10 (hhvm), 78.50 (phpng)

	//Case 9
	$a = new stdclass();
	for ($i=0; $i<1000000; $i++) $a->$i = (string)$i;
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 237.75 (php), 111.50 (hhvm), 128.25 (phpng)

	//Case 10
	$a = new SplFixedArray(1000000);
	for ($i=0; $i<1000000; $i++) $a[$i] = (string)$i;
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 145.5 (php), 61.11 (hhvm), 61.75 (phpng)

	//Case 11
	$a = array();
	for ($i=0; $i<1000000; $i++) $a[(string)$i] = (string)$i;
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 230 (php), 61.12 (hhvm), 78.50 (phpng)

	//Case 12
	$a = array();
	for ($i=0; $i<1000000; $i++) $a[$i] = "";
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 138.5 (php), 30.62 (hhvm), 33.75 (phpng)

	//Case 13
	$a = new stdclass;
	for ($i=0; $i<1000000; $i++) $a->$i = "";
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 146 (php), 81.02 (hhvm), 82.50 (phpng)

	//Case 14
	$a = new SplFixedArray(1000000);
	for ($i=0; $i<1000000; $i++) $a[$i] = "";
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 54 (php), 30.63 (hhvm), 17.00 (phpng)

	//Case 15
	$a = array();
	for ($i=0; $i<1000000; $i++) $a[$i] = "hello";
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 138.5 (php), 30.64 (hhvm), 33.75 (phpng)

	//Case 16
	$a = new stdclass;
	for ($i=0; $i<1000000; $i++) $a->$i = "hello";
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 146 (php), 81.04 (hhvm), 82.50 (phpng)

	//Case 17
	$a = new SplFixedArray(1000000);
	for ($i=0; $i<1000000; $i++) $a[$i] = "hello";
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 54 (php), 30.65 (hhvm), 17.25 (phpng)

	//Case 18
	$a = array();
	for ($i=0; $i<1000000; $i++) $a[$i] = array();
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 222.5 (php), 30.65 (hhvm), 34.00 (phpng)

	//Case 19
	$a = new stdclass;
	for ($i=0; $i<1000000; $i++) $a->$i = array();
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 230 (php), 81.05 (hhvm), 82.50 (phpng)

	//Case 20
	$a = new SplFixedArray(1000000);
	for ($i=0; $i<1000000; $i++) $a[$i] = array();
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 138 (php), 30.66 (hhvm), 17.50 (phpng)

	//Case 21
	$a = array();
	for ($i=0; $i<500000; $i++) $a[$i] = array("");
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 214.75 (php), 18.67 (hhvm), 18.25 (phpng)

	//Case 22
	$a = new stdclass;
	for ($i=0; $i<500000; $i++) $a->$i = array("");
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 218.25 (php), 41.81 (hhvm), 41.75 (phpng)

	//Case 23
	$a = new SplFixedArray(1000000);
	for ($i=0; $i<500000; $i++) $a[$i] = array("");
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 176.00 (php), 30.68 (hhvm), 17.50 (phpng)

	//Case 24
	$a = array();
	for ($i=0; $i<500000; $i++) $a[$i] = array("hello");
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 214.50 (php), 18.68 (hhvm), 18.25 (phpng)

	//Case 25
	$a = new stdclass;
	for ($i=0; $i<500000; $i++) $a->$i = array("hello");
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 218.25 (php), 41.82 (hhvm), 41.75 (phpng)

	//Case 26
	$a = new SplFixedArray(1000000);
	for ($i=0; $i<500000; $i++) $a[$i] = array("hello");
	echo "Case ".++$index.": ".number_format(memory_get_usage(true)/1048576, 2)."\n";
	// 176 (php), 30.69 (hhvm), 17.50 (phpng)
}
test();

?>