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public php v1 · immutable<?php$num = 1;function number() { if ( $number % 2 === 0 ) { $bg = white; $num = $num + 1; } else { $bg = black; $num = $num + 1; }}number();echo $bg;number();echo $bg;number();echo $bg;number();echo $bg;?><?php$num = 1;function number() { if ( $number % 2 === 0 ) { $bg = white; $num = $num + 1; } else { $bg = black; $num = $num + 1; }}number();echo $bg;number();echo $bg;number();echo $bg;number();echo $bg;?>