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February 14, 2018 14:11
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PHP Fast and simple UUID v4 generator
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<?php | |
function generateUuidWithoutDashes(): string | |
{ | |
$uuidBin = random_bytes(16); | |
$uuidBin &= "\xFF\xFF\xFF\xFF\xFF\xFF\x0F\xFF\x3F\xFF\xFF\xFF\xFF\xFF\xFF\xFF"; | |
$uuidBin |= "\x00\x00\x00\x00\x00\x00\x40\x00\x80\x00\x00\x00\x00\x00\x00\x00"; | |
$uuidHex = bin2hex($uuidBin); | |
return $uuidHex; | |
} | |
function generateUuidWithDashes(): string | |
{ | |
$uuidBin = random_bytes(18); | |
$uuidBin &= "\xFF\xFF\xFF\xFF\x0F\xFF\xF0\x0F\xFF\x03\xFF\xF0\xFF\xFF\xFF\xFF\xFF\xFF"; | |
$uuidBin |= "\x00\x00\x00\x00\x00\x00\x00\x40\x00\x08\x00\x00\x00\x00\x00\x00\x00\x00"; | |
$uuidHex = bin2hex($uuidBin); | |
$uuidHex[8] = $uuidHex[13] = $uuidHex[18] = $uuidHex[23] = '-'; | |
return $uuidHex; | |
} |
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