class="area">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>使用转义字符“\”对字符串进行转义</title>
</head>
<body>
<?php
echo ' select * from tb_book where bookname = \'PHP5从入门到精通\' ';
?>
</body>
</html>