本文實例講述了php基於GD庫畫五星紅旗的方法。分享給大家供大家參考。具體分析如下：
這裡實例分析php畫的五星紅旗（GD庫），代碼如下：
復制代碼 代碼如下:<?php
header("Content-Type:image/jpeg");
$ing = imagecreatetruecolor(700,410);
//新建一個真彩色圖像，返回值為一個圖像標識符，背景默認為黑色，參數(x_size*y_size)
$red = imagecolorallocate($ing,255,0,0);//定義背景顏色
$yellow = imagecolorallocate($ing,237,231,32);//定義黃色
imagefill($ing,0,0,$red);//填充顏色，以坐標(0,0)開始起填充
//數組坐標，表示(x1,y1,x2,y2,x3,y3.....x11,y11);
$a = array(90,30,108,73,157,73,119,102,135,152,93,123,52,152,66,102,29,74,76,73,90,30);
imagefilledpolygon($ing,$a,10,$yellow);//畫一個多邊形：10表示頂點總數，$yellow表示填充色
$a1 = array(229,25,229,43,248,48,229,55,229,74,217,60,198,66,210,50,197,34,218,39,229,25);
imagefilledpolygon($ing,$a1,10,$yellow);
$a2 = array(227,108,227,127,245,134,228,139,227,157,215,143,196,149,208,132,196,117,215,122,227,108);
imagefilledpolygon($ing,$a2,10,$yellow);
$a3 = array(163,184,163,204,181,211,163,216,163,234,152,220,132,225,144,209,132,193,151,199,163,184);
imagefilledpolygon($ing,$a3,10,$yellow);
$a4 = array(65,209,65,228,84,235,65,240,65,259,54,245,33,249,46,233,34,217,53,224,68,209);
imagefilledpolygon($ing,$a4,10,$yellow);
ob_clean();
imagejpeg($ing);
imagedestroy($ing);
?>
希望本文所述對大家的php程序設計有所幫助。
