问题
How would I check if certain text was outputted to the screen using PHP?
For example, I have this code:
<html>
<body>
<noscript>
error: no js
<noscript>
<?php
//detect if the HTML printed out "error: no js"
?>
</body>
</html>
I want to detect if HTML printed out the specified <noscript> message. Is this possible to do with PHP, or on a PHP page? Is there a better way to stop any scripts if JavaScript is disabled, or if certain output was outputted?
I would especially like to do this because then I can pass certain output if certain conditions were met, and have the PHP act according to the output.
Thanks!
回答1:
The only thing I can think of is setting a cookie:
<script type="text/javascript">
document.cookie = "jsEnabled=true";
</script>
Then, you can do a simple check in PHP:
<?php
if (isset($_COOKIE['jsEnabled'])) {
// Javascript is enabled!
} else {
// Javascript is not enabled!
}
来源：https://stackoverflow.com/questions/16742307/check-if-certain-text-was-outputted-to-the-screen-php