IfElse.php

<?php
$arr = [];
for ($i = 0; $i < 100000; $i++) {
    $arr[] = rand();
}

$timeStart1 = microtime(true);
foreach ($arr as $value){
    $tmp = $value > 1000000000 ? $value : $value - 1000000000;
}
$timeEnd1 = microtime(true);
var_export($timeEnd1 - $timeStart1);
print "\n";

$timeStart2 = microtime(true);
foreach ($arr as $value){
    if ($value > 1000000000) {
        $tmp = $value;
    } else {
        $tmp = $value - 1000000000;
    }
}
$timeEnd2 = microtime(true);
var_export($timeEnd2 - $timeStart2);

/*
0.010640144348145
0.0077409744262695
*/