<?xml version="1.0"?>
<documentation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="https://phpcsstandards.github.io/PHPCSDevTools/phpcsdocs.xsd"
    title="Removed PCRE Modifiers"
    >
    <standard>
    <![CDATA[
    The /e modifier, as could be used in regexes passed to the PCRE `preg_replace()` and `preg_filter()` functions, is deprecated since PHP 5.5 and removed since PHP 7.0.
    Use `preg_replace_callback()` or `preg_replace_array_callback()` instead.
    ]]>
    </standard>
    <code_comparison>
        <code title="Cross-version compatible: using preg_replace_callback().">
        <![CDATA[
<em>preg_replace_callback</em>(
    '/^(.?)/',
    <em>function ($matches) {
        return strtoupper($matches[1]);
    }</em>,
    $input
);
        ]]>
        </code>
        <code title="PHP &lt; 7.0: using the /e modifier.">
        <![CDATA[
preg_replace(
    <em>'/^(.?)/e'</em>,
    <em>"strtoupper('\\1')"</em>,
    $input
);
        ]]>
        </code>
    </code_comparison>
</documentation>
