This function returns a string or an array with all occurrences of
search
in subject
(ignoring case) replaced with the given replace
value. If you don't need fancy replacing rules, you should generally
use this function instead of
preg_replace() with the i modifier.
If search
and replace
are
arrays, then str_ireplace() takes a value from each
array and uses them to search and replace on
subject
. If replace
has fewer
values than search
, then an empty string is used for
the rest of replacement values. If search
is an
array and replace
is a string, then this replacement
string is used for every value of search
. The
converse would not make sense, though.
If search
or replace
are arrays, their elements are processed first to last.
search
The value being searched for, otherwise known as the needle. An array may be used to designate multiple needles.
replace
The replacement value that replaces found search
values. An array may be used to designate multiple replacements.
subject
The 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.
count
If passed, this will be set to the number of replacements performed.
Returns a string or an array of replacements.
Version | Description |
---|---|
5.0.0 |
The count parameter was added.
|
Example #1 str_ireplace() example
<?php
$bodytag = str_ireplace("%body%", "black", "<body text=%BODY%>");
?>
Note: This function is binary-safe.
Because str_ireplace() replaces left to right, it might replace a previously inserted value when doing multiple replacements. Example #2 in the str_replace() documentation demonstrates how this may affect you in practice.