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<?php $a = "ab"; echo preg_replace("/(a)|(b)/", ["+$2+", "-$1-"], $a);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught TypeError: preg_replace(): Argument #1 ($pattern) must be of type array when argument #2 ($replacement) is an array, string given in /in/dYqfv:5 Stack trace: #0 /in/dYqfv(5): preg_replace('/(a)|(b)/', Array, 'ab') #1 {main} thrown in /in/dYqfv on line 5
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: preg_replace(): Argument #1 ($pattern) must be of type array when argument #2 ($replacement) is an array, string given in /in/dYqfv:5 Stack trace: #0 /in/dYqfv(5): preg_replace('/(a)|(b)/', Array, 'ab') #1 {main} thrown in /in/dYqfv on line 5
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: preg_replace(): Parameter mismatch, pattern is a string while replacement is an array in /in/dYqfv on line 5

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