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@ 2015-04-22T09:31:47Z

<?php

$artigos = [
    "Art. 1 lala 23",
    "Art. 2 lala 23",
    "Art. 3 lala 23",
    "Art. 4345 lala 23",
    ];
$artigos_len = count($artigos) -1;

for ($i=0; $i <= $artigos_len; $i++) {
    $tmp_num = preg_match("/Art\. (\d)+/i",$artigos[$i],$match);
    var_dump($match);
    
}

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
preg_match: documentation ( source)

preferences:dark modelive preview

64.69 ms | 402 KiB | 5 Q