PHP GD draws 24-hour histogram_PHP tutorial-PHP Tutorial-php.cn

80,250,430,134,35,60,233,90,263,225,120,59,151,677,340,221,550,300,229,97,230,123,133,87 A total of 24 numbers, none of them can be missing, otherwise an error will occur. You can modify the function to judge
Copy code The code is as follows:
/*    
24小时柱状图    
作者:taokey    
QQ:29611705    
*/    

function h24($str){     

        $hour = explode(",",$str);     
        $hmax = max($hour);     
        $ppix = 150/$hmax;     

        //计算柱状图高度     
        $h0 = 190-$hour[0]*$ppix;     
        $h1 = 190-$hour[1]*$ppix;     
        $h2 = 190-$hour[2]*$ppix;     
        $h3 = 190-$hour[3]*$ppix;     
        $h4 = 190-$hour[4]*$ppix;     
        $h5 = 190-$hour[5]*$ppix;     
        $h6 = 190-$hour[6]*$ppix;     
        $h7 = 190-$hour[7]*$ppix;     
        $h8 = 190-$hour[8]*$ppix;     
        $h9 = 190-$hour[9]*$ppix;     
        $h10 = 190-$hour[10]*$ppix;     
        $h11 = 190-$hour[11]*$ppix;     
        $h12 = 190-$hour[12]*$ppix;     
        $h13 = 190-$hour[13]*$ppix;     
        $h14 = 190-$hour[14]*$ppix;     
        $h15 = 190-$hour[15]*$ppix;     
        $h16 = 190-$hour[16]*$ppix;     
        $h17 = 190-$hour[17]*$ppix;     
        $h18 = 190-$hour[18]*$ppix;     
        $h19 = 190-$hour[19]*$ppix;     
        $h20 = 190-$hour[20]*$ppix;     
        $h21 = 190-$hour[21]*$ppix;     
        $h22 = 190-$hour[22]*$ppix;     
        $h23 = 190-$hour[23]*$ppix;     

        //创建一个img     
        $img = imagecreate(755,210);     
        //背景     
        $bgc = imagecolorallocate ($img, 245, 250, 254);     
        //黑色     
        $bc = imagecolorallocate($img,0,0,0);     
        //画竖轴     
        imageline($img,15,30,15,189, $bc);     
        //画横轴     
        imageline($img,15,190,750,190, $bc);     

        //画竖轴点     
        for($i=39,$j=10;$i<189;$i=$i+15,$j--){     
                imageline($img,13,$i,15,$i, $bc);     
                imagestring($img,1,1,$i-4,$j."x", $bc);     
        }     

        //画横轴点     
        $t = true;     
        for($i=31,$j=29;$i<750;$i=$j+1,$j=$j+15){     
                if($t){     
                        $x=$i;     
                        $t=false;     
                }else{     
                        $x=$i+1;     
                        $t=true;     
                }     
                imageline($img,$x,190,$x,192, $bc);     
        }     
        //竖轴标记     
        $x = ceil($hmax/10);     
        imagestring($img,2,10,15,"X=".$x,$bc);     
        //竖轴标记     

        //0点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,31,$h0,45,189,$color);     
        imagestring($img,1,31,$h0-10,$hour[0],$color);     
        imagechar($img,1,36,195,0,$bc);     

        //1点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,61,$h1,75,189,$color);     
        imagestring($img,1,61,$h1-10,$hour[1],$color);     
        imagechar($img,1,66,195,1,$bc);     

        //2点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,91,$h2,105,189,$color);     
        imagestring($img,1,91,$h2-10,$hour[2],$color);     
        imagechar($img,1,96,195,2,$bc);     

        //3点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,121,$h3,135,189,$color);     
        imagestring($img,1,121,$h3-10,$hour[3],$color);     
        imagechar($img,1,126,195,3,$bc);     

        //4点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,151,$h4,165,189,$color);     
        imagestring($img,1,151,$h4-10,$hour[4],$color);     
        imagechar($img,1,156,195,4,$bc);     

        //5点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,181,$h5,195,189,$color);     
        imagestring($img,1,181,$h5-10,$hour[5],$color);     
        imagechar($img,1,186,195,5,$bc);     

        //6点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,211,$h6,225,189,$color);     
        imagestring($img,1,211,$h6-10,$hour[6],$color);     
        imagechar($img,1,216,195,6,$bc);     

        //7点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,241,$h7,255,189,$color);     
        imagestring($img,1,241,$h7-10,$hour[7],$color);     
        imagechar($img,1,246,195,7,$bc);     

        //8点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,271,$h8,285,189,$color);     
        imagestring($img,1,271,$h8-10,$hour[8],$color);     
        imagechar($img,1,276,195,8,$bc);     

        //9点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,301,$h9,315,189,$color);     
        imagestring($img,1,301,$h9-10,$hour[9],$color);     
        imagechar($img,1,306,195,9,$bc);     

        //10点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,331,$h10,345,189,$color);     
        imagestring($img,1,331,$h10-10,$hour[10],$color);     
        imagestring($img,1,334,195,10,$bc);     

        //11点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,361,$h11,375,189,$color);     
        imagestring($img,1,361,$h11-10,$hour[11],$color);     
        imagestring($img,1,364,195,11,$bc);     

        //12点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,391,$h12,405,189,$color);     
        imagestring($img,1,391,$h12-10,$hour[12],$color);     
        imagestring($img,1,394,195,12,$bc);     

        //13点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,421,$h13,435,189,$color);     
        imagestring($img,1,421,$h13-10,$hour[13],$color);     
        imagestring($img,1,424,195,13,$bc);     

        //14点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,451,$h14,465,189,$color);     
        imagestring($img,1,451,$h14-10,$hour[14],$color);     
        imagestring($img,1,454,195,14,$bc);     

        //15点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,481,$h15,495,189,$color);     
        imagestring($img,1,481,$h15-10,$hour[15],$color);     
        imagestring($img,1,481,195,15,$bc);     

        //16点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,511,$h16,525,189,$color);     
        imagestring($img,1,511,$h16-10,$hour[16],$color);     
        imagestring($img,1,511,195,16,$bc);     

        //17点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,541,$h17,555,189,$color);     
        imagestring($img,1,541,$h17-10,$hour[17],$color);     
        imagestring($img,1,544,195,17,$bc);     

        //18点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,571,$h18,585,189,$color);     
        imagestring($img,1,571,$h18-10,$hour[18],$color);     
        imagestring($img,1,571,195,18,$bc);     

        //19点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,601,$h19,615,189,$color);     
        imagestring($img,1,601,$h19-10,$hour[19],$color);     
        imagestring($img,1,604,195,19,$bc);     

        //20点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,631,$h20,645,189,$color);     
        imagestring($img,1,631,$h20-10,$hour[20],$color);     
        imagestring($img,1,634,195,20,$bc);     

        //21点     
        $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));     
        imagefilledrectangle($img,661,$h21,675,189,$color);     
        imagestring($img,1,661,$h21-10,$hour[21],$color);     
        imagestring($img,1,664,195,21,$bc);     

        //22点     
$color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255)); 🎜> imagestring($img,1,691,$h22-10,$hour[22],$color); 
 imagestring($img,1,694,195,22,$bc); 

 //23 points 
 $color = imagecolorallocate($img, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255)); 
 imagefilledrectangle($img,721,$h23,735,189,$color ); 
 imagestring($img,1,721,$h23-10,$hour[23],$color); 
 imagestring($img,1,724,195,23,$bc); /Add a border It doesn’t look good after adding it 
 //imagerectangle($img, 0, 0, 754, 209, $bc); ); 
} 
$str = isset($_GET['str'])?$_GET['str']:""; 
if($str){ 
 h24($str ); 
} 
?>








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