File extension: a function for obtaining the file extension & lt ;? * GetFileType usage: GetFiletype ($ filename) * functionGetFiletype ($ Filename) {if (substr_count ($ Filename,.) 0) {check whether the file name contains a. number. Return; a function used to obtain the file extension.
/*
GetFileType
Usage: GetFiletype ($ filename)
*/
Function GetFiletype ($ Filename ){
If (substr_count ($ Filename, ".") = 0) {// check whether the file name contains a. number.
Return; // return null
} Else if (substr ($ Filename,-1) = ".") {// check whether it ends with A., that is, no extension.
Return; // return null
} Else {
$ FileType = strrchr ($ Filename, "."); // cut from.
$ FileType = substr ($ FileType, 1); // remove the. number.
Return $ FileType; // return
}
}
$ Filename = "Testfilename. php4 ";
$ Filename = GetFileType ($ Filename );
Echo $ Filename; // Print out php4
The above describes a function for getting a file extension with the file extension, including the file extension, and hope to be helpful to anyone interested in the PHP Tutorial.
