<?php $tests = [ '12, 34, 56', '233, 0, 0, 1', '99, 68, 135', '0, 0, 0, 0.31', ]; foreach ($tests as $test) { unset($r, $g, $b, $a); sscanf($test, '%d,%d,%d,%f', $r, $g, $b, $a); var_dump($r, $g, $b, $a); echo "\n"; }
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