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,php批量生成缩略图代码如下:
- <?php
- $oimg = "test.jpg";
- $classes = array('translation','autoheight','autowidth','stretch');
- $suffix = 'jpg';
- $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);
- 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;
- $source = imagecreatefromjpeg($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);
- imagedestroy($source);
- }
- ?>
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.
<?php /*
;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. |