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@ 2018-01-05T00:37:12Z

<?php
$arr=array();
$arr[0]['id']='123';
$arr[0]['otherdatas']='';
$arr[1]['id']='234';
$arr[1]['otherdatas']='';
$arr[2]['id']='567';

echo implode(',',array_column($arr,'id'));

Output
Performance
VLD
References
Branches

array_column: documentation ( source)
implode: documentation ( source)

preferences:dark modelive previewkey bindings

25.52 ms | 405 KiB | 5 Q