<? php
     function  showTag( $cur = 47 , $tag = " 美女和野兽 " ){
         $maxSize = 300 ; $minSize = 30 ; // maxSize为标签字体最大大小,minSize为标签最小大小 按百分比
         $max = 100 ; $min = 8 ; // max为最多标签点击数 min为最少点击数 cur为当前标签当前点击数
         $tagColor = $tagSize = $minSize ; # tagColor为标签最终颜色，tagsize为标签最终字体大小
         $tagSize = @( float )( $cur - $min ) / ( $max - $min ) * ( $maxSize - $minSize );
    
         $colors = array ( " 0.2 " => " #333333 " , " 0.4 " => " #0033CC " , " 0.6 " => " #660099 " , " 0.8 " => " #00FFFF " , " 1 " => " #FF0000 " );
         // color为存放颜色的数组，按百分百存放，例如在0-0.2之间的color1
         $colorkeys = array_keys ( $colors );
        
         $select = ( float )( $cur - $min ) / ( $max - $min );
         $len = count ( $colorkeys );
         $i = 0 ; $j = $len - 1 ;
         while ( $i < $j ){ // 二分查找
             $index = ( $i + $j ) / 2 ;
             if ( $select >= ( float ) $colorkeys [ $index ]  &&   $select < ( float ) $colorkeys [ $index + 1 ])  break ;
             elseif ( $select < ( float ) $colorkeys [ $index ])  $j -- ;
             elseif ( $select > ( float ) $colorkeys [ $index ])  $i ++ ;
             elseif ( $select == ( float ) $colorkeys [ $index + 1 ])  break ;
             else   break ;
        }
         $tagColor = $colors [ $colorkeys {( $i + $j ) / 2 }];
         echo   " <span style='font-size:${tagSize}%;color:$tagColor'>$tag </span> " ;
    }
    showTag( 90 );showTag( 66 , " 股民 " );showTag( 50 , " 我的爱情 " );showTag( 100 , " MM " );
?>