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@ 2024-10-18T21:47:40Z

<?php

$domains = [
    'a-.bc.com',
    'a.bc-.com',
    'a.bc.com-',
];

foreach ($domains as $domain) {
    echo $domain . PHP_EOL;
    var_dump(filter_var($domain, FILTER_VALIDATE_DOMAIN, FILTER_FLAG_HOSTNAME));
    echo PHP_EOL;
}

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
filter_var: documentation ( source)

preferences:dark modelive previewkey bindings

24.46 ms | 405 KiB | 5 Q