How to replace the first one in php preg

How to replace the first one with php preg: 1. Create a PHP sample file; 2. Pass "function str_replace_limit($search, $replace, $subject, $limit=-1) {...} ” method can be used to replace it.

The operating environment of this article: Windows7 system, PHP7.1 version, DELL G3 computer

How to replace the first php preg?

PHP replacement, only replace the first matched

function str_replace_limit($search, $replace, $subject, $limit=-1) {
    if (is_array($search)) {
        foreach ($search as $k=>$v) {
        $search[$k] = '`' . preg_quote($search[$k],'`') . '`';
        }
    }
    else {
        $search = '`' . preg_quote($search,'`') . '`';
    }
return preg_replace($search, $replace, $subject, $limit);
}

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$search: String or array to be replaced

$replace: The value to be replaced

$subject: The text to be replaced

$limit: The number to be replaced

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