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@ 2018-12-21T19:30:42Z

<?php

$results = [];
for ($i = 1; $i <= 1000; $i++) {
    $o = new stdClass;
    $o->ID = $i;
    $results[] = $o;
}

echo implode(",", array_column($results, "ID"));

Output
Performance
VLD
References
Branches

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

preferences:dark modelive previewkey bindings

86.13 ms | 2449 KiB | 5 Q