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php regular expression function

<?php

preg_filter()	Returns a string or an array with pattern matches replaced, but only if matches were found
preg_grep()	Returns an array consisting only of elements from the input array which matched the pattern
preg_last_error()	Returns an error code indicating the reason that the most recent regular expression call failed
preg_match()	Finds the first match of a pattern in a string
preg_match_all()	Finds all matches of a pattern in a string
preg_replace()	Returns a string where matches of a pattern (or an array of patterns) are replaced with a substring (or an array of substrings) in a given string
preg_replace_callback()	Given an expression and a callback, returns a string where all matches of the expression are replaced with the substring returned by the callback
preg_replace_callback_array()	Given an array associating expressions with callbacks, returns a string where all matches of each expression are replaced with the substring returned by the callback
preg_split()	Breaks a string into an array using matches of a regular expression as separators
preg_quote()	Escapes characters that have a special meaning in regular expressions by putting a backslash in front of them
  
?> 
 
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Tagged: #php #regular #expression #function
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