3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "\n"; echo sha1($a)."\n"; $b = "\n\n"; echo sha1($b)."\n"; echo "111111111111111111\n"; $a = "\x34\x32\x2E"; echo $a."\n"; echo sha1($a)."\n"; echo strlen($a)."\n"; var_dump($a=="42")."\n"; $b = '\x34\x32\x2E'; echo $b."\n"; echo strlen($b)."\n"; var_dump($b=="42")."\n";
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 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
adc83b19e793491b1c6ea0fd8b46cd9f32e592fc 71853c6197a6a7f222db0f1978c7cb232b87c5ee 111111111111111111 42. fe765152c6266870243aff8fe64459493abdfd41 3 bool(true) \x34\x32\x2E 12 bool(false)
preferences:
175.02 ms | 404 KiB | 258 Q