PHP preg_replace 函數的程式碼記錄

紀錄主題：PHP preg_replace 函數

記錄範例：PHP preg_replace 函數

<?php
echo '<meta http-equiv="Content-Type" content="text/html; charset=utf-8">';　//輸出網頁編碼為 utf-8
$subject="Hi, My name is John. I love travel.";
$pattern='John';
$replacement='Piter';
echo preg_replace("/($pattern)/i",$replacement,$subject);
?>