Replace all occurrences of the search string with the replacement string
Syntax
str_replace ( mixed $search , mixed $replace , mixed $subject [, int &$count ] ) : mixed
Parameters
searchThe value being searched for, otherwise known as the needle. An array may be used to designate multiple needles.
replaceThe replacement value that replaces found search values. An array may be used to designate multiple replacements.
subjectThe string or array being searched and replaced on, otherwise known as the haystack. If subject is an array, then the search and replace is performed with every entry of subject, and the return value is an array as well.
countIf passed, this will be set to the number of replacements performed.
Return
This function returns a string or an array with the replaced values.
Examples
1 · search replace subject
<? $search = "case"; $replace = "replace"; $subject = "case Case CASE"; $return = str_replace($search, $replace, $subject); echo $return; ?>
replace Case CASE
2 · count
<? $search = "case"; $replace = "replace"; $subject = "case Case CASE"; $return = str_replace($search, $replace, $subject, $count); echo $count; ?>
1
3
<?
$search = array("search1", "search2", "search3");
$replace = "replace";
$subject = "search1 search2 search3";
$return = str_replace($search, $replace, $subject);
echo $return;
?>replace replace replace
4
<?
$search = array("search1", "search2", "search3");
$replace = array("replace1", "replace2", "replace3");
$subject = "search1 search2 search3";
$return = str_replace($search, $replace, $subject);
echo $return;
?>replace1 replace2 replace3
5
<?
$search = array("\r\n", "\n", "\r"); // \r\n first
$replace = "<br>";
$subject = "line\nline\rline\r\nline";
$return = str_replace($search, $replace, $subject);
echo $return;
?>line<br>line<br>line<br>line
6
<?
$search = array('a', 'b', 'c', 'd', 'e');
$replace = array('b', 'c', 'd', 'e', 'f');
$subject = 'a';
$return = str_replace($search, $replace, $subject);
echo $return;
?>f
7
<?
$search = array('a', 'p');
$replace = array('apple', 'pear');
$subject = 'apricot';
$return = str_replace($search, $replace, $subject);
echo $return;
?>apearpearlepearricot
