3v4l.org

run code in 300+ PHP versions simultaneously
<?php // your code goes here $test = "moind3re pro_blème"; var_dump(preg_match("/^[a-zA-Z\x00C0-\x017F]/u", $test)); //var_dump (filter_var($test, FILTER_SANITIZE_SPECIAL_CHARS, FILTER_FLAG_STRIP_LOW));
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: preg_match(): Compilation failed: range out of order in character class at offset 12 in /in/df4OD on line 6 bool(false)
Output for 5.4.7 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 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
Warning: preg_match(): Null byte in regex in /in/df4OD on line 6 bool(false)
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.6
Warning: preg_match(): No ending delimiter '/' found in /in/df4OD on line 6 bool(false)
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/df4OD on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.10
Warning: No ending delimiter '/' found in /in/df4OD on line 6 bool(false)

preferences:
244.02 ms | 401 KiB | 354 Q