<?php
$data = [
[
'NAme' => 'Ваня',
'payments_sum' => 10
],
[
'NAme' => 'Петя',
'payments_sum' => 9
],
[
'NAme' => 'Егор',
'payments_sum' => 3
],
];
print_r(array_column
($data, null, 'NAme')['Петя']);
PD9waHAKCiRkYXRhID0gWwoJWwoJCSdOQW1lJyA9PiAn0JLQsNC90Y8nLAoJCSdwYXltZW50c19zdW0nID0+IDEwCgldLAoJWwoJCSdOQW1lJyA9PiAn0J/QtdGC0Y8nLAoJCSdwYXltZW50c19zdW0nID0+IDkKCV0sCglbCgkJJ05BbWUnID0+ICfQldCz0L7RgCcsCgkJJ3BheW1lbnRzX3N1bScgPT4gMwoJXSwKXTsKCnByaW50X3IoYXJyYXlfY29sdW1uKCRkYXRhLCBudWxsLCAnTkFtZScpWyfQn9C10YLRjyddKTs=