- array_column: documentation ( source)
- print_r: documentation ( source)
- implode: documentation ( source)
<?php
$result = array(
array (
"display_name"=>"哈哈哈哈哈哈",
"object_id"=>"123456",
"object_type"=>"topic",
),
array (
"display_name"=>"嚯嚯嚯嚯嚯嚯",
"object_id"=>"123456",
"object_type"=>"topic",
)
);
print_r(implode(',', array_column($result, 'display_name')));