testFaster.php

<?
print '________ first'.PHP_EOL;
$t = microtime(true);
$array = array();
for($i = 0; $i < 10000; $i++) {
    $array[] = $i;
}
print '$arr[]:              '.round(microtime(true) - $t, 5);
print PHP_EOL;
$t = microtime(true);
$array = array();
for($i = 0; $i < 10000; $i++) {
    array_push($array, $i);
}
print 'array_push($arr):    '.round(microtime(true) - $t, 5);
print PHP_EOL;
$t = microtime(true);
$array = array();
for($i = 0; $i < 10000; $i++) {
    array_unshift($array, $i);
}
print 'array_unshift($arr): '.round(microtime(true) - $t, 5);
print PHP_EOL;

print PHP_EOL.'________ second'.PHP_EOL;
$arrayA = array();
for($i = 0; $i < 10000; $i++) {
    $arrayA[] = $i;
}
$arrayB = array();
for($i = 0; $i < 10000; $i++) {
    $arrayB[] = $i;
}
$t = microtime(true);
$arr = array_merge($arrayA, $arrayB);
print 'array_merge($a, $arr):                '.round(microtime(true) - $t, 5);
print PHP_EOL;

$arrayA = array();
for($i = 0; $i < 10000; $i++) {
    $arrayA[] = $i;
}
$arrayB = array();
for($i = 0; $i < 10000; $i++) {
    $arrayB[] = $i;
}
$t = microtime(true);
foreach ($arrayB as $row) {
	$arrayA[] = $row;	
}
print 'foreach ($arr as $row) {$a[] = $row}: '.round(microtime(true) - $t, 5);
print PHP_EOL;

print PHP_EOL.'________ three'.PHP_EOL;

$arrayA = array();
for($i = 0; $i < 10000; $i++) {
    $arrayA[] = $i;
}
$arrayB = array();
for($i = 0; $i < 10000; $i++) {
    $arrayB[] = $i;
}

foreach ($arrayB as $row) {
	$arrayA[] = $row;	
}
$t = microtime(true);
$arr = array_slice($arrayA, 0, 2000);
print 'array_slice($a, 0, 2000): '.round(microtime(true) - $t, 5);
print PHP_EOL;


$arrayA = array();
for($i = 0; $i < 10000; $i++) {
    $arrayA[] = $i;
}
$arrayB = array();
for($i = 0; $i < 10000; $i++) {
    $arrayB[] = $i;
}

foreach ($arrayB as $row) {
	$arrayA[] = $row;	
}
$t = microtime(true);
$arr = array_slice($array, -2000);
print 'array_slice($a, -2000):  '.round(microtime(true) - $t, 5);
print PHP_EOL;