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【www.gdgbn.com--php常用代码】
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$oimg = "test.jpg";//original image name
$classes = array("translation","autoheight","autowidth","stretch");//give classes for the new creating images" size which are defined in the specified ini file
$suffix = "jpg";//the new image"s suffix
$inifile = "image.ini.php";$size = getimagesize($oimg);
$x = $size[0]/$size[1];
$name = explode(".",$oimg);if(!file_exists($inifile)) die("ini file does not exist!");
$cn = parse_ini_file($inifile,true);//parse the class style image size from ini file
foreach($classes as $class){
foreach($cn as $k=>$v){
if($k==$class){
if($v["width"] && $v["height"]){
$thumbwidth = $v["width"];
$thumbheight = $v["height"];
}elseif($v["width"]){
$thumbwidth = $v["width"];
$thumbheight = round($thumbwidth/$x);
}elseif($v["height"]){
$thumbheight = $v["height"];
$thumbwidth = round($thumbheight*$x);
}else{
$thumbwidth = $size[0];
$thumbheight = $size[1];
}
break;
}
}
if(!isset($thumbheight) && !isset($thumbwidth)) die("ini file settings error!");$nimg = $name[0]."_".$class.".".$suffix;//new image file name
$source = imagecreatefromjpeg($oimg);
$thumb = imagecreatetruecolor($thumbwidth, $thumbheight);
imagecopyresampled($thumb,$source,0,0,0,0,$thumbwidth,$thumbheight,$size[0],$size[1]);if($suffix=="jpg") $method = "imagejpeg";
else $method="image".$suffix;
$method($thumb, $nimg);
imagedestroy($thumb);//release the image source
imagedestroy($source);
}
?>
缩放图片的php代码，其中变量classes是一个数组，可以选择任意多个ini文件中指定的设置：
这是一个ini配置文件，上面的代码就要读取这个文件中的图片位置，可以多个。
;translate the image format using the original image size
[translation]
width=0
height=0;stretch the image to the specified size
[stretch]
width=800
height=600;zoom the image to the specified width with height auto size
[autoheight]
width=740
height=0;zoom the image to the specified height with width auto size
[autowidth]
width=0
height=380
*/ ?>
注意：ini文件使用php解释时为注释文件，什么也没有输出，这是为了安全起见而故意为之。而;则是ini文件的注释。