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@ 2018-06-11T13:01:06Z

<?php
$value = '1234567890';

if (! preg_match('/((\d{0,6})-)?(\d{1,10})/', $value, $matches)) {
    echo 'nope';
}

print_r($matches);

if (!$matches[1]) {
    echo 'test';
}

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)
print_r: documentation ( source)

preferences:dark modelive preview

45.32 ms | 402 KiB | 5 Q