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regex\_replace {#language.modifier.regex.replace}
==============
A regular expression search and replace on a variable. Use the
[`preg_replace()`](&url.php-manual;preg_replace) syntax from the PHP
manual.
> **Note**
>
> Although Smarty supplies this regex convenience modifier, it is
> usually better to apply regular expressions in PHP, either via custom
> functions or modifiers. Regular expressions are considered application
> code and are not part of presentation logic.
Parameters
Parameter Position Type Required Default Description
-------------------- -------- ---------- --------- ------------------------------------------------
1 string Yes *n/a* This is the regular expression to be replaced.
2 string Yes *n/a* This is the string of text to replace with.
<?php
$smarty->assign('articleTitle', "Infertility unlikely to\nbe passed on, experts say.");
?>
Where template is:
{* replace each carriage return, tab and new line with a space *}
{$articleTitle}
{$articleTitle|regex_replace:"/[\r\t\n]/":" "}
Will output:
Infertility unlikely to
be passed on, experts say.
Infertility unlikely to be passed on, experts say.
See also [`replace`](#language.modifier.replace) and
[`escape`](#language.modifier.escape).
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