zblog获取图片的高、宽和大小

2023-12-04 11:03:55 综合教程 142

图片下载站经常会用到的，自动获取图片的高、宽和大小，
1、添加函数

function tc_imgssize_getImageSize($url, $type = 'curl', $isGetFilesize = false)
{
$type = $isGetFilesize ? 'fread' : $type;
if ($type == 'fread') {
$handle = fopen($url, 'rb');
if (! $handle) return false;
$dataBlock = fread($handle, 168);
}else{
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_TIMEOUT, 5);
curl_setopt($ch, CURLOPT_RANGE, '0-167');
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$dataBlock = curl_exec($ch);
curl_close($ch);
if (! $dataBlock) return false;
}
$size = getimagesize('data://image/jpeg;base64,'. base64_encode($dataBlock));
if (empty($size)) {
// $size = (getimagesize('press.zlib://'.$url));
// if (empty($size)) {
// return false;
// }
return false;
}
$result['width'] = $size[0];
$result['height'] = $size[1];
if ($isGetFilesize) {
$meta = stream_get_meta_data($handle);
$dataInfo = isset($meta['wrapper_data']['headers']) ? $meta['wrapper_data']['headers'] : $meta['wrapper_data'];
foreach ($dataInfo as $va) {
if ( preg_match('/length/iU', $va)) {
$ts = explode(':', $va);
$result['size'] = trim(array_pop($ts));
break;
}
}
}
if ($type == 'fread') fclose($handle);
return $result;
}
2、调用函数

$imageInfo=tc_imgssize_getImageSize($imgurl, 'fread', true);
3、输入图片的高、宽和大小

$width=$imageInfo['width'];
$height=$imageInfo['height'];
$size=$imageInfo['size'];
高、宽的单位是px，大小的单位是kb。