Php obtains the file extension in the url.

Php obtains the file extension in the url.

// Retrieve the file extension in the url $ Url = "http://sdk.tools.sinaapp.com/index.php? Appname = beipiao & version = 1 "; Function getFileName ($ url ){ $ A = explode ('? ', $ Url ); $ B = strrpos ($ a [0], '. '); // strrpos (string to be searched, [start position to search]) locate the last occurrence of a string: returns the last occurrence of a string; if not found, false is returned. $ C = substr ($ a [0], $ B + 1, 3); // substr (operated string, start position, [end position]) returns part of the string Return $ c; } Echo getFileName ($ url )." "; // Method 2 Function getFileNameTwo ($ url ){ $ A = parse_url ($ url, PHP_URL_PATH); // parse_url () parses the url and returns its components $ B = pathinfo ($ a, PATHINFO_EXTENSION); // pathinfo () Return $ B; } Print_r (getFileNameTwo ($ url ));

File extension, php, url