Changed example #2 in preg_replace() to have the arrays initialized before writing to them.

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@292327 c90b9560-bf6c-de11-be94-00142212c4b1

reference/pcre/functions/preg-replace.xml

@@ -214,9 +214,11 @@ April1,2003
 <![CDATA[
 <?php
 $string = 'The quick brown fox jumped over the lazy dog.';
+$patterns = array();
 $patterns[0] = '/quick/';
 $patterns[1] = '/brown/';
 $patterns[2] = '/fox/';
+$replacements = array();
 $replacements[2] = 'bear';
 $replacements[1] = 'black';
 $replacements[0] = 'slow';