<?php
 
$results = array(
	'custom_params' => 'custom_limit="0"|input_label="{\"label_values\":[\"\u9650\u5916\u5e36\",\"\u9650\u5167\u7528\",\"\u9650\u6642\u5546\u54c1\",\"\u514d\u9810\u7d04\",\"\u5373\u8cb7\u5373\u7528\",\"\u672c\u9031\u5f37\u6a94\",\"\u611b\u5fc3\u516c\u76ca\"]}"|repeat_label=""|'
	);
$custom_params = explode('|', $results['custom_params']);
foreach ($custom_params as $param) {
    if (preg_match('/^input_label="(.*)"$/', $param, $match)) {
        $input_label = json_decode(str_replace('\"', '"', $match[1]), true);
        $label_values = $input_label['label_values'];
        break;
    }
}
var_dump($label_values);

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