I want to strip the extension from a filename, and get the file name - e.g. file.xml -> file, image.jpeg -> image, test.march.txt -> test.march, etc.
So I wrote this function
function strip_extension($filename) {
$dotpos = strrpos($filename, ".");
if ($dotpos === false) {
$result = $filename;
}
else {
$result = substr($filename,0,$dotpos);
}
return $result;
}
Which returns an empty string.
I can't see what I'm doing wrong?
Looking for pathinfo i believe. From the manual:
<?php
$path_parts = pathinfo('/www/htdocs/inc/lib.inc.php');
echo $path_parts['dirname'], "\n";
echo $path_parts['basename'], "\n";
echo $path_parts['extension'], "\n";
echo $path_parts['filename'], "\n"; // since PHP 5.2.0
?>
Result:
/www/htdocs/inc
lib.inc.php
php
lib.inc
Save yourself a headache and use a function already built. ;-)
pathinfo() only worked with valid paths/files. Owned :xYou should use pathinfo which is made to do that.
Example:
Things used: pathinfo()
$name = 'file.php';
$pathInfo = pathinfo($name);
echo 'Name: '. $pathInfo['filename'];
Results:
Name: file
Example 2 (shorter)
$name = 'file.php';
$fileName= pathinfo($name, PATHINFO_FILENAME );
echo "Name: {$fileName}";
Results:
Name: file
This very simple function does the trick:
function strip_extension($filename)
{
$extension = pathinfo($filename, PATHINFO_EXTENSION);
$regexp = '@\.'.$extension.'$@';
return preg_replace($regexp, "", $filename);
}
Here is a short one. Just know if you pass a path, you'll lose the path info :)
function stripExtension($filename) {
return basename($filename, '.' . pathinfo($filename, PATHINFO_EXTENSION));
}
The only real advantage of this one is if you are running < PHP 5.2.
function strip_extension($filename){
if (isset(pathinfo($filename)['extension'])) { // if have ext
return substr($filename, 0, - (strlen(pathinfo($filename)['extension'] +1)));
}
return $filename; // if not have ext
}
You must verify if the filename has extension to not have errors with pathinfo. As explained in http://php.net/manual/en/function.pathinfo.php
pathinfo($filename, PATHINFO_EXTENSION) to get a string back instead of needing to call isset() on the array.Probably not the most efficient, but it actually answers the question.
function strip_extension($filename){
$f = array_reverse(str_split($filename));
$e = array();
foreach($f as $p){
if($p == '.'){
break;
}else{
array_push($e,$p);
}
}
return implode('',array_reverse($e));
}
If you have just a filename (without path) and simply want to remove the extension (e.g. .jpeg), you can use strtok :
$filenameWithoutPath = 'example.jpeg';
$filenameWithoutExension = \strtok($filenameWithoutPath, '.');
This will simply remove the part of the string including and after the first dot (.). This is not the purpose that strtok was originally intended for, but it works well in this situation, as well as stripping a query string from a URL (strtok($url, '?')).
I expect this is much more efficient than using pathinfo(), which I think would be overkill in both situations.
function strip_extension(string $filename) : string {.