php GD绘制24小时柱状图
2015-01-24信息快讯网
<?PHP /* 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)); imagefilledrectangle($img,691,$h22,705,189,$color); imagestring($img,1,691,$h22-10,$hour[22],$color); imagestring($img,1,694,195,22,$bc); //23点 $color = imagecolorallocate($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,$bc); //加个边框 加了之后不好看 //imagerectangle($img, 0, 0, 754, 209, $bc); imagepng($img); imagedestroy($img); } $str = isset($_GET['str'])?$_GET['str']:""; if($str){ h24($str); } ?>