3v4l.org

run code in 300+ PHP versions simultaneously
<?php $strings = array('\s', '\n\t', "abc", 'abc\\\\foo'); foreach ($strings as $str) { $stripped = stripcslashes($str); $rebuilt = addcslashes($stripped, '\\'); var_dump($str, $str === $rebuilt, $rebuilt); }
Output for 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 - 8.3.4, 8.3.6
string(2) "\s" bool(false) string(1) "s" string(4) "\n\t" bool(false) string(2) " " string(3) "abc" bool(true) string(3) "abc" string(8) "abc\\foo" bool(true) string(8) "abc\\foo"
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 string(2) "\s" bool(false) string(1) "s" string(4) "\n\t" bool(false) string(2) " " string(3) "abc" bool(true) string(3) "abc" string(8) "abc\\foo" bool(true) string(8) "abc\\foo"
preferences:
167.18 ms | 402 KiB | 193 Q