Summary of pitfalls

A small note: use the htmlspecialchars_decode() function to restore escaped characters to HTML tags $str = '<p><span style=";font-family:Microsoft Yahei;font-size:16px"&…

My page is utf-8, the page of file_get_contents is gb2312, and the Chinese characters are garbled when output. The solution is as follows: Copy the code <?php header("Content-Type:text/html;charset=utf-8"); $keyworld="coal seam&quot…

curl() is several times faster than file_get_contents(). function curl_file_get_contents($durl) { $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $durl); curl_setopt($ch, CURL…

A customer asked me to write a plug-in for him to convert website PV to advertisement click. I wrote him a plug-in according to his request. I only need to put the following code into a php file, and then introduce this php file to realize this function. PHP plug-in code: <?php /************************ Parameter configuration begins *********************...

Generally implemented through js, just reload the value of src<img src="index.php?p=back&c=Admin&a=captcha" onclick="this.src=this.src+'&k='+Math.random();"/…

Regular expression URL (URL) [a-zA-z]+://[^\s]*IP address (IP Address)((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?) Email (Email)\w+([-+.]\w+)*@\w+([-.]\w+)*…

Use browser caching of official words: If users will visit your website multiple times, browser caching of static resources can save users time. Cache headers should be applied to all cacheable static resources, not just to a small subset of static resources (for example, images). Cacheable resources include JS and CSS files, image files, and other binary object files (media files, PDF files, etc.). Normally, HTML doesn’t…