Retrieving a numeric value from an html string

Question

I am currently trying to extract a numeric value from an html string. I am currently using preg_match but to no luck. All I desire is to get the numeric value set as param of a javascript function myFunction. As of now I get an empty array. Any help to achieve this?

$data = "<th style='text-align:center;width:33%;'><a onclick='return myfunction(12314568);' href='#test' class='btn mini full'>Test</a> </th>";

preg_match("/\[return myfunction([0-9]+)\]/", $data, $m);
print_r($m);

first off, ( and ) have special meaning in regex, so you must escape them. second, where the heck are you getting the [ and ] from? if you remove those, and escape the () , your regex works fine. 3v4l.org/8qvnH — hanshenrik
– hanshenrik, Commented Apr 13, 2018 at 19:37
@hanshenrik ahh you are absolutely right. Overlooked those two things. — MaryCoding
– MaryCoding, Commented Apr 13, 2018 at 19:38

dukedevil294 · Accepted Answer · 2018-04-13 19:39:27Z

1

The brackets need to be removed and the parentheses need to be escaped since they actually appear in the string. You'll then need another set of parentheses to group the numbers so they are separated:

preg_match("/return myfunction\(([0-9]+)\)/", $data, $m);

answered Apr 13, 2018 at 19:39

dukedevil294

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