3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo strlen("abcd"); $s = "arc"; echo "count: " . strlen($s) . "\n"; $string = "Marcus"; $rest = $string; do { $rest = stristr($rest,$s); echo "rest: $rest\n"; $s3 = substr($rest,0,strlen($s)+1); $string = str_replace($s3,"<$s3>",$string); echo "s3: $s3\n"; $rest = substr($rest,strlen($s)+1); echo "rest: $rest\n"; echo "=======\n"; } while ($rest != false); echo "string: $string\n";
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.21, 7.0.0 - 7.0.20, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
4count: 3 rest: arcus s3: arcu rest: s ======= rest: s3: rest: ======= string: M<arcu>s
preferences:
258.98 ms | 406 KiB | 372 Q