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<?php $test = array('key' => 'value'); print_r(implode( array_map( array_filter($test, function($key, $value){ return $value == 'value';}), function($key, $value){ return $value; }) ) );
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
Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 1 passed and exactly 2 expected in /in/Q9d6D:7 Stack trace: #0 [internal function]: {closure}('value') #1 /in/Q9d6D(7): array_filter(Array, Object(Closure)) #2 {main} thrown in /in/Q9d6D on line 7
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 ArgumentCountError: Too few arguments to function {closure}(), 1 passed and exactly 2 expected in /in/Q9d6D:7 Stack trace: #0 [internal function]: {closure}('value') #1 /in/Q9d6D(7): array_filter(Array, Object(Closure)) #2 {main} thrown in /in/Q9d6D on line 7
Process exited with code 255.

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