Hi! Could we please enable some services and cookies to improve your experience and our website?
Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
$val = [
"tags" => [
["value" => "tag1"],
["value" => "tag2"],
["value" => "tag3"],
]
];
$tags = array_column($val["tags"], "value");
echo implode(',', $tags);