There are three ways to remove an extension from a string. They are as follows
- Using the pathinfo intrinsic function
- Using the basename intrinsic function
- Using the string substr and strrpos functions
Using the function pathinfo(): The pathinfo() function returns an array containing the directory name, base name , extension and file name.
Syntax: pathinfo ($path, $options = PATHINFO_DIRNAME | PATHINFO_BASENAME | PATHINFO_EXTENSION | PATHINFO_FILENAME) Alternatively, if only one PATHINFO_ constant is passed as a parameter, only that part of the full filename is returned.
Example:
// Initialize the variable data with the file name $file = ’filename.html’ ;
// Extract filename only using constants $x = pathinfo ( $file , PATHINFO_FILENAME);
// Print result echo $x ;
?> Exit:filename Note.If the filename contains a full path, only the filename without the extension is returned.Using the basename(): The basename() function is used to return the trailing component of a pathname as a string. Basename() works naively on the input string and is unaware of the actual filesystem or path components such as ".."
Syntax:basename ($path, $suffix)
When a file extension is known, it can be passed as a parameter to the basename function to tell it to remove that extension from the file name.Example:
// Initialize the variable
// with the file name $file = ’filename.txt’ ;
// The suffix is passed as the second
// parameter $x = basename ( $file , ’.txt’ );
// Print result echo $x ;
?> Exit:filename Using the function substr() and strrpos() .Another way to remove the extension from the filename - using the string functions substr and strrpos. Substr() returns a portion of a string, while strrpos() finds the position of the last occurrence of a substring in a string.Syntax:substr ($string, $start, $length)
Example :
// Variable initialization
/ / with file name $file = ’filename.txt’ ;
// Using substr $x = substr ( $file , 0, strrpos ( $file , ’.’ ));
// Show file name echo $x ;
?> Exit:filename Note.If the file name contains a full path, then the full path and file name without extension is returned.
