php - 如何将上传的图像始终转换为JPG格式？

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已关闭8年。




我只是上传:

$ path =“uploads/”;

$actual_image_name = time().$session_id.".".$ext;
$tmp = $_FILES['photoimg']['tmp_name'];
move_uploaded_file($tmp, $path.$actual_image_name);

如何为该功能添加imagejpeg？我想始终以JPG格式保存图像。

最佳答案

试试这个:

<?php

$path = "uploads/";

$img = $_FILES['photoimg']['tmp_name'];
$dst = $path . $_FILES['photoimg']['name'];

if (($img_info = getimagesize($img)) === FALSE)
  die("Image not found or not an image");

$width = $img_info[0];
$height = $img_info[1];

switch ($img_info[2]) {
  case IMAGETYPE_GIF  : $src = imagecreatefromgif($img);  break;
  case IMAGETYPE_JPEG : $src = imagecreatefromjpeg($img); break;
  case IMAGETYPE_PNG  : $src = imagecreatefrompng($img);  break;
  default : die("Unknown filetype");
}

$tmp = imagecreatetruecolor($width, $height);
imagecopyresampled($tmp, $src, 0, 0, 0, 0, $width, $height, $width, $height);
imagejpeg($tmp, $dst.".jpg");

?>

关于php - 如何将上传的图像始终转换为JPG格式？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/14550299/