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/**
* 图片缩放
*/
function resizeImage($p_w_picpath, $prefix = '', $width = 266, $compression = 0)
{
//判断操作系统转换图片名称编码
if(strtoupper(substr(PHP_OS, 0, 3)) === 'WIN')
{
$p_w_picpath = iconv('utf-8', 'gbk', $p_w_picpath);
}
//获取图片相关信息
$imgInfo = getp_w_picpathsize($p_w_picpath);
$imgInfo['width'] = $imgInfo[0];
$imgInfo['height'] = $imgInfo[1];
$width = $imgInfo['width'] < $width ? $imgInfo['width'] : $width;
if(!empty($imgInfo['width']) && !empty($imgInfo['height']))
{
switch ($imgInfo['mime'])
{
case 'p_w_picpath/jpeg':
$imgRes = p_w_picpathcreatefromjpeg($p_w_picpath);
break;
case 'p_w_picpath/gif':
$imgRes = p_w_picpathcreatefromgif($p_w_picpath);
break;
case 'p_w_picpath/png':
$imgRes = p_w_picpathcreatefrompng($p_w_picpath);
break;
case 'p_w_picpath/bmp':
$imgRes = p_w_picpathcreatefromwbmp($p_w_picpath);
break;
}
if($imgRes)
{
$proportion = $width / $imgInfo['width'];
$height = $imgInfo['height'] * $proportion;
$white = p_w_picpathcreatetruecolor($width, $height);
//缩小图片
p_w_picpathcopyresampled($white, $imgRes, 0, 0, 0, 0, $width, $height, $imgInfo['width'], $imgInfo['height']);
$imgName = $prefix ? $prefix . $this->nameToChina($p_w_picpath) : $this->nameToChina($p_w_picpath);
$p_w_picpathName = dirname($p_w_picpath) . DS . $imgName;
if(file_exists($p_w_picpathName))
{
unlink($p_w_picpathName);
}
if(!$compression)
{
p_w_picpathpng($white, $p_w_picpathName);
}
else
{
p_w_picpathjpeg($white,$p_w_picpathName);
}
//销毁资源
p_w_picpathdestroy($white);
p_w_picpathdestroy($imgRes);
}
}
}