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Homephp教程php手册php获得图像长宽、大小等属性

欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入 当我们在使用PHP开发用户中心时,肯定会有用户上传头像这一功能,或者在开发其他交互功能需要上传图片时,我们都需要知道用户上传的图片是否满足我们的要求,这里给大家分享一个简单的获取图像属性的

欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入

  当我们在使用PHP开发用户中心时,肯定会有用户上传头像这一功能,或者在开发其他交互功能需要上传图片时,我们都需要知道用户上传的图片是否满足我们的要求,这里给大家分享一个简单的获取图像属性的PHP自定义函数,希望能给大家带来帮助,这个函数也是网上一位网友写的,UncleToo测试过了,效果还不错,使用很方便。

  代码:

  

  /**

  * 取得图像信息

  *

  * @param string $image 图像文件名

  *

  * @return mixed

  */

  function getImageInfo($image) {

  $imageInfo = getimagesize($image);

  if ($imageInfo !== FALSE) {

  $imageType = strtolower(substr(image_type_to_extension($imageInfo[2]), 1));

  $imageSize = filesize($image);

  $info = array(

  "width" => $imageInfo[0],

  "height" => $imageInfo[1],

  "type" => $imageType,

  "size" => $imageSize,

  "mime" => $imageInfo['mime']

  );

  return $info;

  } else {

  return FALSE;

  }

  }

  ?>

  调用示例:

  1

  2

  3

  4

  

  $info = getImageInfo('123.jpg');

  var_dump($info);

  ?>

  输出结果:

  array(5) {

  ["width"]=>

  int(614)

  ["height"]=>

  int(850)

  ["type"]=>

  string(4) "jpeg"

  ["size"]=>

  int(597066)

  ["mime"]=>

  string(10) "image/jpeg"

  }

  这里输出的信息和下面图片展示的信息是一致的。

  图片信息:

php获得图像长宽、大小等属性

php获得图像长宽、大小等属性

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