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php画图实例_php技巧

WBOY
Release: 2016-05-16 20:32:54
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本文实例讲述了php画图的方法。分享给大家供大家参考。具体实现方法如下:

复制代码 代码如下:
// by MoreWindows
$imgWidth = 600; 
$imgHeight = 400; 
$img = imagecreatetruecolor($imgWidth, $imgHeight); 
imagefill($img, 0, 0, imagecolorallocate($img, 240, 240, 240));//设置底色 
$snowflake_size = 30; 
$font_file = "c:\\WINDOWS\\Fonts\\simhei.ttf";  
//生成大雪花 其实就是调用imagettftext()输出*号 
for ($i=1; $i { 
    $font_color = imagecolorallocate($img, mt_rand(100,200), mt_rand(100,200), mt_rand(100,200)); 
    imagettftext($img, $snowflake_size, mt_rand(0, 180), mt_rand(0, $imgWidth),mt_rand(0, $imgHeight), $font_color, $font_file, "□");  

//水印文字 
$black_color = imagecolorallocate($img, 0, 0, 0); 
imagettftext($img, 12, 0, $imgWidth - 50 , $imgHeight - 20, $black_color, $font_file, "PHP画图"); 
imagepng($img); 
imagedestroy($img); 
?>

本实例运行效果如下图所示

更多请参考:
http://www.php.net/manual/zh/refs.utilspec.image.php

希望本文所述对大家的PHP程序设计有所帮助。

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