query: PHP: preg_match(): Delimiter must not be alphanumeric or backslash
positive_passages.docid: 34297
positive_passages.text: Delimiter must not be alphanumeric or backslash and preg_match
negative_passages.docid: 3934
negative_passages.text: Regular expression for parsing CSV in PHP
negative_passages.docid: 13908
negative_passages.text: How to determine if a String has non-alphanumeric characters?
negative_passages.docid: 98955
negative_passages.text: Error: Bad math evironment delimiter
negative_passages.docid: 32072
negative_passages.text: PHP: Convert any string to UTF-8 without knowing the original character set, or at least try
negative_passages.docid: 131499
negative_passages.text: Convert backslash-delimited string into an associative array
negative_passages.docid: 4589
negative_passages.text: PHP validation/regex for URL
negative_passages.docid: 106452
negative_passages.text: Apex: Is there a way to strip out non-alphanumeric characters from a string?
negative_passages.docid: 60603
negative_passages.text: Unicode character in PHP string
negative_passages.docid: 1978
negative_passages.text: What to do Regular expression pattern doesn't match anywhere in string?
negative_passages.docid: 101511
negative_passages.text: Is there a PHP function that can escape regex patterns before they are applied?
negative_passages.docid: 149804
negative_passages.text: How can I match a quote-delimited string with a regex?
negative_passages.docid: 96443
negative_passages.text: PHP regex for validating a URL
negative_passages.docid: 141021
negative_passages.text: How can I get at the matches when using preg_replace in PHP?
negative_passages.docid: 26682
negative_passages.text: PHP regular expressions: No ending delimiter '^' found in
negative_passages.docid: 147011
negative_passages.text: Regular expression for excluding special characters
negative_passages.docid: 43508
negative_passages.text: Why are $_POST variables getting escaped in PHP?