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Test strings for letters, numbers, and special characters. Returns true if they exist, false if they don't. Forked from http://stackoverflow.com/a/9588010/1293256
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| <?php | |
| // Does string contain letters? | |
| function _s_has_letters( $string ) { | |
| return preg_match( '/[a-zA-Z]/', $string ); | |
| } | |
| // Does string contain numbers? | |
| function _s_has_numbers( $string ) { | |
| return preg_match( '/\d/', $string ); | |
| } | |
| // Does string contain special characters? | |
| function _s_has_special_chars( $string ) { | |
| return preg_match('/[^a-zA-Z\d]/', $string); | |
| } | |
| ?> |
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