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run code in 300+ PHP versions simultaneously
<?php function usercolor( $username ) { $range = 192 - 64; $factor = $range / 256; $offset = 64; $base_hash = substr(md5($username), 0, 6); $b_R = hexdec(substr($base_hash,0,2)); $b_G = hexdec(substr($base_hash,2,2)); $b_B = hexdec(substr($base_hash,4,2)); $f_R = floor((floor($b_R * $factor) + $offset) / 16) * COL_STEP; $f_G = floor((floor($b_G * $factor) + $offset) / 16) * COL_STEP; $f_B = floor((floor($b_B * $factor) + $offset) / 16) * COL_STEP; return printf('#%02x%02x%02x', $f_R, $f_G, $f_B); } for( $i=0; $i<30; $i++ ) { printf('<div style="height: 100px; width: 100px; background-color: %s">&nbsp;</div>'."\n", usercolor(rand())); }

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