使用PHP使用索引部分字符串查找数组值

Question

I am having below array. I would like to get the value which is having '1' and the key should be 'wf_status_step%'. How to write a PHP script for this?

[ini_desc] => 31.07 Initiative1
[mea_id] => 1
[status] => 4
[name] => 31.07 Measure1
[scope] => NPR
[sector] => 
[mea_commodity] => 8463
[commodity_cls] => IT
[delegate_usrid] => 877
[wf_status_step1] => 2
[wf_status_step2] => 1
[wf_status_step3] => 0
[wf_status_step4] => 0
[wf_status_step5] => 0

Answer 1

A shorter version that will find all keys with value 1 that start with 'wf_status_step'

$keys = array_filter(array_keys($array,1),function($key){
    return stripos($key,'wf_status_step') === 0;
});