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PHP Strings: How to Get the Extension of a File

· Web Dev Zone

EXE or GIF or DLL or …

Most of the code chunks I’ve seen about getting a file extension from a string are based on some sort of string manipulation.

Get the Filename Extension with PHP

If you want to get the filename extension with PHP is better to use pathinfo() than string manipulations

$filename = '/my/path/image.jpeg';
echo substr($filename, strrpos($filename, '.') + 1);
Howerver there is a more elegant solution.
$filename = '/my/path/image.jpeg';
echo strtolower(pathinfo($filename, PATHINFO_EXTENSION));
Thus you rely on PHP built in functions and it’s harder to overlook the exact string manipulation approach.

 

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Published at DZone with permission of Stoimen Popov, DZone MVB. See the original article here.

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