How to get first file extension in string using PHP?

Question

I want to get first file extension in string using php.

now i use this code.

<?php
$string = "aaa.jpgbbb.pngccc.jpg";
if( strpos( $string, $needle ) !== false ) {
    list($string) = explode('.png',$string);
    echo $string.".jpg";
}
?>

My code only check file extension in string. but can not get first file extension. How can i do ?

. .

For this string first file extension is jpg.

$string = "aaa.jpgbbb.pngccc.jpg";

. .

For this string first file extension is gif.

$string = "aaa.gifbbb.pngccc.jpg";

. .

For this string first file extension is png.

$string = "aaa.pngbbb.pngccc.jpg";

This makes no sense. Why does `$string` contain multiple filenames crammed together like this? — ceejayoz, Mar 02 '18 at 15:34
@ ceejayoz - multiple filenames i get from srcset tag sir. `` — mamong mamiw, Mar 02 '18 at 15:38
But a `srcset` has them in comma-separated format, like `aaa.png, bbb.png, ccc.jpg`. Why not use that? — ceejayoz, Mar 02 '18 at 15:38
@ Nawin - not always sir, i want to store file extension set into array for detect sir. — mamong mamiw, Mar 02 '18 at 15:39
This is a pretty glaring example of an XY problem. How and why have you ended up with a string containing multiple concatenated filenames when your actual use-case is a `srcset` attribute? — iainn, Mar 02 '18 at 15:43
@Nawin - not work when ` $string = "www.xxx.com/aaa.jpgbbb.pngccc.jpg";` — mamong mamiw, Mar 02 '18 at 15:45
@mamongmamiw Now you're just being silly. Use the **actual** `srcset` value and explode it on the `,` character. This entire question has an absurd premise. — ceejayoz, Mar 02 '18 at 15:46

score 0 · Answer 1 · answered Mar 02 '18 at 15:39

0

$string = "aaa.gifbbb.pngccc.jpg";
$pattern = '|\.([^\.]+)$|';
preg_match ( $pattern , $string, $matches);
var_dump($matches);
die;

Try this one

answered Mar 02 '18 at 15:39

Dmitri Gudkov

2,093
16
15

How to get first file extension in string using PHP?

1 Answers1