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@ 2017-06-14T07:50:59Z

<?php

$attr = '@C_1_2=Client';
$d = 'C_1_2:  Client';
if (preg_match('/\@(.*)=(.*)/', $attr, $matches)) {
					// check corresponding values
					$tmp_attr = trim($matches[1]);
					$tmp_value = trim($matches[2]);
					if (preg_match("/$tmp_attr:$tmp_value/", $d)) {
						echo 'yes';
					}
				}

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)
trim: documentation ( source)

preferences:dark modelive preview

54.26 ms | 402 KiB | 5 Q