3v4l.org

run code in 300+ PHP versions simultaneously
<?php $fp = fopen(__FILE__, 'r'); $domain = array(); var_dump(preg_replace('/^www\./', '', $fp));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: preg_replace(): Argument #3 ($subject) must be of type array|string, resource given in /in/La9Cs:5 Stack trace: #0 /in/La9Cs(5): preg_replace('/^www\\./', '', Resource id #5) #1 {main} thrown in /in/La9Cs on line 5
Process exited with code 255.
Output for 5.2.3 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
string(14) "Resource id #5"
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.2
string(14) "Resource id #2"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
string(14) "Resource id #1"

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