本文实例讲述了PHP在线执行的实现方法。分享给大家供大家参考，具体如下：
运行效果截图如下：
run.php文件如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>调试php代码</title>
</head>
<style>
iframe{ min-width:600px;}
textarea{ max-height:600px}
table{ margin:0 auto;}
</style>
<body>
<table border="0" width="100px">
<tr>
<th>PHP 代码调试</th>
<th></th>
<th></th>
</tr>
<tr>
<form action="./run2.php" target="run_iframe" method="post">
<td valign="top" align="center">
<textarea name="php_code" cols="50" rows="43"><?php
echo file_get_contents('//www.submisscin.com/wap/./run3.php');
?></textarea>
</td>
<td valign="middle"><button type="submit" style=" width:60px;">执行</button></td>
</form>
<td valign="top"><iframe id="run_iframe" name="run_iframe" src="//www.submisscin.com/wap/./run3.php" height="600px"></iframe></td>
</tr>
</table>
</body>
</html>
run2.php文件如下：
<?php
$code = stripslashes($_POST['php_code']);
if(!strstr($code,'<?php'))
$code = '<?php'.PHP_EOL.$code ;
file_put_contents('run3.php',$code);
header("Location:./run3.php");
希望本文所述对大家PHP程序设计有所帮助。