3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [0 => 'blue pants', 1 => 'red pants', 2 => 'green pants', 3 => 'green pants']; foreach ($array as $key => $value) { if (strpos($value, 'red') !== false) { echo "Key={$key}, Value: {$value}"; break; } }
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
Key=1, Value: red pants

preferences:
139.97 ms | 407 KiB | 5 Q