Warning: preg_match() [function.preg-match]: Unknown modifier
2886
Warning: preg_replace(): Unknown modifier
5725
Create preg_match for password validation allowing (!@#$%)
1262
Fatal error: [] operator not supported for strings
68860
Why this javascript regex doesn't work?
1978
What to do Regular expression pattern doesn't match anywhere in string?
83797
#1115 - Unknown character set: 'utf8mb4'
42740
new Regexp doesn't work
63928
regex error - nothing to repeat
63948
preg_replace, str_replace and substr_replace not working in special condition
148896
using preg_match to detect persian (farsi) characters in string
125038
What is a "Nested Quantifier" and why is it causing my regex to fail?
26682
PHP regular expressions: No ending delimiter '^' found in
38724
Preg_replace match on word boundery and not in link
11635
Disable warnings when loading non-well-formed HTML by DomDocument (PHP)
68031
PHP/REGEX: Get a string within parentheses
157172
PHP PCRE (regex) doesn't support UTF-8?
1336
PHP preg_match to find multiple occurrences