3v4l.org

run code in 300+ PHP versions simultaneously
<?php $pattern='/^(?=(.*[a-z])+)(?=(.*[A-Z]){2,})(?=(.*[0-9])+)(?=(.*[&#@=€$%*?\/:!\-+])+)([a-zA-Z0-9&#@=€$%*?\/:!\-+]){8,}$/'; echo "Using one byte from €:\\xe2 \\x82 \\xac", PHP_EOL; var_dump (preg_match($pattern, "aAB0\xe2ABC")); var_dump (preg_match($pattern, "aAB0\x82ABC")); var_dump (preg_match($pattern, "aAB0\xacABC")); echo "Avec €:", PHP_EOL; var_dump (preg_match($pattern, "aAB0€ABC")); echo PHP_EOL, "Since the regex engine reads the string byte by byte, the length of the string isn't what you expected.", PHP_EOL; var_dump(preg_match($pattern, "€aBC01")); ########################################################### echo PHP_EOL,PHP_EOL,'With the (*UTF8) verb',PHP_EOL,'###########################################################',PHP_EOL; $pattern='/(*UTF8)^(?=(.*[a-z])+)(?=(.*[A-Z]){2,})(?=(.*[0-9])+)(?=(.*[&#@=€$%*?\/:!\-+])+)([a-zA-Z0-9&#@=€$%*?\/:!\-+]){8,}$/'; echo "(*UTF8): Now € is seen as an character, no more as a set of bytes", PHP_EOL; var_dump (preg_match($pattern, "aAB0\xe2ABC")); var_dump (preg_match($pattern, "aAB0\x82ABC")); var_dump (preg_match($pattern, "aAB0\xacABC")); echo "Avec €:", PHP_EOL; var_dump (preg_match($pattern, "aAB0€ABC")); echo PHP_EOL, "Test with '€aBC01'. Now the regex engine reads the string unicode point by unicode point (encoded in UTF-8), the length of the string is the number of characters. Since there's less than 8 characters the pattern fails..", PHP_EOL; var_dump(preg_match($pattern, "€aBC01")); ########################################################### echo PHP_EOL,PHP_EOL, 'With the u modifier', PHP_EOL,'###########################################################',PHP_EOL; $pattern='/^(?=(.*[a-z])+)(?=(.*[A-Z]){2,})(?=(.*[0-9])+)(?=(.*[&#@=€$%*?\/:!\-+])+)([a-zA-Z0-9&#@=€$%*?\/:!\-+]){8,}$/u'; echo "The u modifier that is synonym of (*UTF8)(*UCP)", PHP_EOL; var_dump (preg_match($pattern, "aAB0\xe2ABC")); var_dump (preg_match($pattern, "aAB0\x82ABC")); var_dump (preg_match($pattern, "aAB0\xacABC")); echo "Avec €:", PHP_EOL; var_dump (preg_match($pattern, "aAB0€ABC")); echo PHP_EOL, "Test with '€aBC01'", PHP_EOL; var_dump(preg_match($pattern, "€aBC01"));
Output for git.master_jit, git.master, rfc.property-hooks
Using one byte from €:\xe2 \x82 \xac int(1) int(1) int(1) Avec €: int(1) Since the regex engine reads the string byte by byte, the length of the string isn't what you expected. int(1) With the (*UTF8) verb ########################################################### (*UTF8): Now € is seen as an character, no more as a set of bytes int(0) bool(false) bool(false) Avec €: int(1) Test with '€aBC01'. Now the regex engine reads the string unicode point by unicode point (encoded in UTF-8), the length of the string is the number of characters. Since there's less than 8 characters the pattern fails.. int(0) With the u modifier ########################################################### The u modifier that is synonym of (*UTF8)(*UCP) bool(false) bool(false) bool(false) Avec €: int(1) Test with '€aBC01' int(0)

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

preferences:
21.05 ms | 403 KiB | 8 Q