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@ 2014-09-04T04:00:35Z

<?php

function sign_imei($str) {  // sha1_64bitInt
    $u = unpack('N2', sha1($str, true));
    $u2 = ($u[1] << 32) | $u[2];
    return $u2 & 0x7fffffffffffffff;
}

echo sign_imei('11122223333');

Output
Performance
VLD
References
Branches

sha1: documentation ( source)
unpack: documentation ( source)

preferences:dark modelive preview

41.3 ms | 402 KiB | 5 Q