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<?php $find = array( "0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f" ); $replace = array( "a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p" ); $find = array_flip($find); echo preg_replace_callback('/[a-f0-9]/', function ($v) use($replace, $find) { return $replace[$find[$v[0]]]; }, $haystack); ?>
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined variable $haystack in /in/mTNma on line 9 Deprecated: preg_replace_callback(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /in/mTNma on line 7
Output for 8.1.0 - 8.1.28
Warning: Undefined variable $haystack in /in/mTNma on line 9 Deprecated: preg_replace_callback(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /in/mTNma on line 9
Output for 8.0.0 - 8.0.30
Warning: Undefined variable $haystack in /in/mTNma on line 9
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined variable: haystack in /in/mTNma on line 9
Output for 7.3.32 - 7.3.33, 7.4.26
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/mTNma on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/mTNma on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/mTNma on line 7
Process exited with code 255.
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332.16 ms | 401 KiB | 452 Q