Get value after particular character in string

Question

I have a string as follows

$str = 'asdasdasd,sdfsdfsdf myNumber=1234, 2323 dfdfdf9898 sdfsdfdsf 234';

I'd like to return the digits within myNumber=1234.

Desired Outcome

$str = '1234';

I currently use the following regex preg_replace('/\myNumber=\d+/', '', $y) to replace when required, which works perfectly, but I'm not sure how I could use this to extract the numbers after the = sign from myNumber=1234?

Answer 1

You can use a preg_match with the following regex:

\bmyNumber=(\d+)

See the regex demo

The value will be available in Group 1. (\d+) matches and captures 1+ digits into a group that will be part of the resulting array.

Demo:

$re = '~\bmyNumber=(\d+)~'; 
$str = "asdasdasd,sdfsdfsdf myNumber=1234, 2323 dfdfdf9898 sdfsdfdsf 234"; 
preg_match($re, $str, $m);
echo $m[1];