PHP PCRE Functions

preg_filter - perform a regular expression search and replace 
preg_grep - returns a match pattern array entries 
returned error code last PCRE regular execution produced - preg_last_error 
preg_match_all - execute a global regular expression match 
preg_match - perform regular expression matching 
preg_quote - Escape regular expression character 
preg_replace_callback_array - the perform a Regular expression the Search and replace the using the callbacks 
the preg_replace_callback - perform a regular expression search and replace using a callback 
preg_replace - perform a regular expression search and replace 
preg_split - separated by a regular expression string