用正则表达式捕获数字组

Question

im trying to capture a group of number behind the " image " word in the url

this is the url http://example.com/image123456/super_moon_image_2

and this is my expectations http://my-example.com/get.php?123456

im using this code its work for some url but the result will broken if there is another number on the url.

$link = 'http://example.com/image123456/super_moon_image_2';
$re = '/[^0-9]/';
$str = preg_replace($re, '', $link);
echo 'http://my-example.com/get.php?' . $str;

can someone help me correct the regex thank you.

Answer 1

You can use the following regex pattern:

(.+?)image(\d+).+

And replace with $1get.php?$2 .

Here's a regex101 demo .

I don't know much PHP, but your code should look something like this:

$link = 'http://example.com/image123456/super_moon_image_2';
$re = '/(.+?)image(\d+).+/m';
$subst = '$1get.php?$2';
$newlink = preg_replace($re, $subst, $link);
echo $newlink;

Live PHP example .