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@ 2019-09-29T11:26:46Z

<?php

$strings = [
    "12-blog/",
    "12-blog/blog2/",
    "en/12-blog/",
    "en/12-blog/blog2/"
];
$pattern = '~^(?:en/)?\d{1,3}-[^/]+/$~';
foreach ($strings as $str) {
    if (preg_match($pattern, $str)) {
        echo "Match for $str" . PHP_EOL;
    } else {
        echo "No match for $str" . PHP_EOL;
    }
}

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)

preferences:dark modelive previewkey bindings

31.27 ms | 404 KiB | 5 Q