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@kaja47 kaja47/mem-test.php
Last active Dec 18, 2015

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PHP memory test
<?php
$testNumber = $argv[1];
const TEST_SIZE = 100000;
class TestPriv {
private $a = 1;
private $b = 2;
private $c = 3;
}
class TestPub {
public $a = 1;
public $b = 2;
public $c = 3;
}
class TestEmpty {}
$a = array();
// integer arrays
if ($testNumber == 1) {
$test = "array_fill nulls";
$a = array_fill(1, TEST_SIZE, null);
}
if ($testNumber == 2) {
$test = "array_fill constant";
$a = array_fill(1, TEST_SIZE, 1);
}
if ($testNumber == 3) {
$test = "array_fill value";
$val = 1;
$a = array_fill(1, TEST_SIZE, $val);
}
if ($testNumber == 4) {
$test = "range";
$a = range(1, TEST_SIZE);
}
if ($testNumber == 5) {
$test = "SplFixedArray empty";
$a = new \SplFixedArray(TEST_SIZE);
}
if ($testNumber == 6) {
$test = "SplFixedArray nulls";
$a = new \SplFixedArray(TEST_SIZE);
for ($i = 1; $i < TEST_SIZE; $i++) $a[$i] = null;
}
if ($testNumber == 7) {
$test = "SplFixedArray const";
$a = new \SplFixedArray(TEST_SIZE);
for ($i = 1; $i < TEST_SIZE; $i++) $a[$i] = 1;
}
// classes, objects, arrays
if ($testNumber == 8) {
$test = "private fields";
for ($i = 0; $i < TEST_SIZE; $i++) {
$a[] = new TestPriv;
}
}
if ($testNumber == 9) {
$test = "public fields default";
for ($i = 0; $i < TEST_SIZE; $i++) {
$a[] = new TestPub;
}
}
if ($testNumber == 10) {
$test = "public fields set";
for ($i = 0; $i < TEST_SIZE; $i++) {
$x = new TestPub;
$x->a = 1;
$x->b = 2;
$x->c = 3;
$a[] = $x;
}
}
if ($testNumber == 11) {
$test = "public fields set one";
for ($i = 0; $i < TEST_SIZE; $i++) {
$x = new TestPub;
$x->a = 1;
$a[] = $x;
}
}
if ($testNumber == 12) {
$test = "public fields add one";
for ($i = 0; $i < TEST_SIZE; $i++) {
$x = new TestPub;
$x->x = 1;
$a[] = $x;
}
}
if ($testNumber == 13) {
$test = "arrays constant keys";
for ($i = 0; $i < TEST_SIZE; $i++) {
$a[] = array(
'a' => 1,
'b' => 2,
'c' => 3,
);
}
}
if ($testNumber == 14) {
$test = "arrays variable keys";
for ($i = 0; $i < TEST_SIZE; $i++) {
$a[] = array(
substr('abc', 0, 1) => 1,
substr('abc', 1, 1) => 2,
substr('abc', 2, 1) => 3,
);
}
}
if ($testNumber == 15) {
$test = "objects";
for ($i = 0; $i < TEST_SIZE; $i++) {
$a[] = (object) array(
'a' => 1,
'b' => 2,
'c' => 3,
);
}
}
if ($testNumber == 16) {
$test = "empty class";
for ($i = 0; $i < TEST_SIZE; $i++) {
$x = new TestEmpty;
$x->a = 1;
$x->b = 2;
$x->c = 3;
$a[] = $x;
}
}
$mem = memory_get_usage(true);
$perElem = $mem / TEST_SIZE;
printf("%-25s mem: %9d, per element %.2f\n", $test, $mem, $perElem);
count($a);
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