使用file_get_contents后，PHP替换字符串 [英] PHP replace string after using file_get_contents

问题描述

我想替换通过 file_get_contents

这是我的代码:

<?

$message = file_get_contents("http://www.MYwebsiteExample.com/EmailConfirmation.php");


$message =  preg_replace('/SAD/', "HAPPY", $message);
// Also tried this below and it does not work either
 $message = str_replace('/SAD/', "HAPPY", $message);

?>

我希望找到SAD的所有模式(区分大小写)并将其替换为HAPPY.由于某些原因，如果我使用 file_get_contents ，它似乎无法正常工作.

I am hoping to find all the patters of SAD (case sensitive) and replace them with HAPPY. For some reason if I use file_get_contents it doesn't seem to be working.

谢谢

更新日期:2013年1月22日

实际上，对不起，当我加上$时，它不起作用.这对于我的代码不是必需的.我可以解决，但这在下面不起作用:

Actually, sorry Correction when I add the $ it does not work. Its not necessary for my code. I can do a work around but this does not work below:

$message = str_replace("$SAD", "HAPPY", $message); /// does not work. Not sure why
$message = str_replace("SAD", "HAPPY", $message); /// without the $ it does work.

推荐答案

$message = str_replace("$SAD", "HAPPY", $message);

需要是:

$message = str_replace('$SAD', "HAPPY", $message);

否则，PHP将其解释为变量$SAD.请参阅此帖子，以获取有关单引号和双引号之间的区别.

Otherwise PHP will interpret it as the variable $SAD. See this post for an explanation on the difference between single and double quotes.

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