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preg_replace()

« preg_quote | preg_replace_callback »
<?php
$mixed 
preg_replace (
    
// mixed $pattern
    
// mixed $replacement
    
// mixed $subject
    
// [int $limit = -1]
    
  // [int &$count]
);
?>
Result
$mixed = 'April1,2003'
Examples
#1 preg_replace  ('/(\w+) (\d+), (\d+)/i',
 
'${1}1,$3',
 
"April 15, 2003")
#2 preg_replace  ([=> "/quick/"=> "/brown/"=> "/fox/"],
 [
=> "bear"=> "black"=> "slow"],
 
"The quick brown fox jumped over the lazy dog.")
#3 preg_replace  ([=> "/quick/"=> "/brown/"=> "/fox/"],
 [
=> "slow"=> "black"=> "bear"],
 
"The quick brown fox jumped over the lazy dog.")
#4 preg_replace  ([=> '/(19|20)(\d{2})-(\d{1,2})-(\d{1,2})/'=> '/^\s*{(\w+)}\s*=/'],
 [
=> '\3/\4/\1\2'=> '$\1 ='],
 
"{startDate} = 1999-5-27")
#5 preg_replace  ('/\s\s+/',
 
" ",
 
"foo o")
#6 preg_replace  ([=> '/\d/'=> '/\s/'],
 
"*",
 
"xp 4 to",
 -
1,
 
$count)
See also
preg_filter, preg_last_error, preg_match, preg_quote, preg_replace_callback, preg_split