(PHP 4 >= 4.3.0, PHP 5, PHP 7)
mime_content_type — Detect MIME Content-type for a file
mime_content_type ( resource|string $filename ) : string|false
Returns the MIME content type for a file as determined by using information from the magic.mime file.
filename
Path to the tested file.
Returns the content type in MIME format, like text/plain or application/octet-stream, or false on failure.
Upon failure, an E_WARNING is emitted.
Example #1 mime_content_type() Example
<?php
echo mime_content_type('php.gif') . "\n";
echo mime_content_type('test.php');
?> The above example will output:
image/gif text/plain
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https://www.php.net/manual/en/function.mime-content-type.php