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PHP Manual
Function Reference
Text Processing
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Regular Expressions (Perl-Compatible)
Introduction
Installing/Configuring
Installation
Runtime Configuration
Predefined Constants
Examples
PCRE Patterns
PCRE regex syntax
— Pattern Syntax
Possible modifiers in regex patterns
— Pattern Modifiers
Differences From Perl
— Perl Differences
PCRE Functions
preg_filter
— Perform a regular expression search and replace
preg_grep
— Return array entries that match the pattern
preg_last_error
— Returns the error code of the last PCRE regex execution
preg_last_error_msg
— Returns the error message of the last PCRE regex execution
preg_match
— Perform a regular expression match
preg_match_all
— Perform a global regular expression match
preg_quote
— Quote regular expression characters
preg_replace
— Perform a regular expression search and replace
preg_replace_callback
— Perform a regular expression search and replace using a callback
preg_replace_callback_array
— Perform a regular expression search and replace using callbacks
preg_split
— Split string by a regular expression
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