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<?php function matchIndetifier($str) { if ($str != preg_replace("/[^0-9a-z]/i", "", $str)) { //Invalid contains characters other than a-zA-Z0-9. } if (isnumeric($str)) { //999999 } if ($str != preg_replace("/\d/", "", $str) { //At this part, it's not numeric, but still has numbers. Invalid. } if (ucfirst($str) == $str) { //Ullllll } if (strtolower($str) == $str) { //llllll } if (strtoupper($str) == $str) { //UUUUUU } }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.28, 5.4.0 - 5.4.28
Parse error: syntax error, unexpected '{' in /in/eVdQe on line 11
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 '{' in /in/eVdQe on line 11
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/eVdQe on line 11
Process exited with code 255.
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226.63 ms | 1395 KiB | 118 Q