Question

我是php新手，我设法将图片上传到我的网络服务器。现在，我正在寻找一种方法，将原始图像的较小重复版本上传到我的网络服务器。

例如，上传的原始图像是image1_timestamp.jpg 我也想要相同的图像，最大宽度为700px，image1_timestamp_700w.jpg而不会丢失图像/高比率。

这是我目前的代码

if ($_FILES["file"]["error"] > 0){
    echo "Error Code: " . $_FILES["file"]["error"] . "<br />";
} else {
    echo "Uploaded file: " . $_FILES["file"]["name"] . "<br />";
    echo "Type: " . $_FILES["file"]["type"] . "<br />";
    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kilobytes<br />";

    if (file_exists("/files/".$_FILES["file"]["name"])) {
        echo $_FILES["file"]["name"] . " already exists";
    } else {
        move_uploaded_file($_FILES["file"]["tmp_name"],"/var/www/mydomain.com/docs/files/images/".$_FILES["file"]["name"]);
        echo "Done";
    }
}

谢谢！

Answer 1

我为你写了一些东西：

请继续使用：DIRECTORY_SEPARATOR const

<?php
    /**
     *  @brief Resize an image with keeping aspect ratio
     *  
     *  @param [in] $src_image_path :: Source image path => "C:\www\abstract.jpg"
     *  @param [in] $dst_image_path :: Destination image path => "C:\www\abstract2.jpg"
     *  @param [in] $new_width :: Width aspect ratio => "700"
     *  @return image
     *  
     */
    function resizeImage($src_image_path, $dst_image_path, $new_width) {
        $mime = getimagesize($src_image_path);

        if($mime['mime']=='image/png'){ $src_img = imagecreatefrompng($src_image_path); }
        if($mime['mime']=='image/jpg'){ $src_img = imagecreatefromjpeg($src_image_path); }
        if($mime['mime']=='image/jpeg'){ $src_img = imagecreatefromjpeg($src_image_path); }
        if($mime['mime']=='image/pjpeg'){ $src_img = imagecreatefromjpeg($src_image_path); }

        $aspect = $mime[1] / $mime[0];

        $new_height = $aspect * $new_width;

        $old_x          =   imageSX($src_img);
        $old_y          =   imageSY($src_img);

        $dst_img        =   ImageCreateTrueColor($new_width,$new_height);

        imagecopyresampled($dst_img,$src_img,0,0,0,0,$new_width,$new_height,$old_x,$old_y); 

        // Quality compression : From 0 to 100
        $jpg_quality = 90;

        // Quality compression : From 0 to 9
        $png_quality = 8;

        if($mime['mime']=='image/png'){ $result = imagepng($dst_img, $dst_image_path, $png_quality); }
        if($mime['mime']=='image/jpg'){ $result = imagejpeg($dst_img, $dst_image_path, $jpg_quality); }
        if($mime['mime']=='image/jpeg'){ $result = imagejpeg($dst_img, $dst_image_path, $jpg_quality); }
        if($mime['mime']=='image/pjpeg'){ $result = imagejpeg($dst_img, $dst_image_path, $jpg_quality); }

        imagedestroy($dst_img); 
        imagedestroy($src_img);

        return $result;
    }

    $currentPath = dirname(__FILE__) . DIRECTORY_SEPARATOR;

    echo $currentPath;

    resizeImage($currentPath . 'abstract.jpg', $currentPath . 'abstract2.jpg', 700);
?>

编辑对于您的情况，这可能会有效：

<?php
    $newWidth = 700;
    $savePath = "/var/www/mydomain.com/docs/files/images/" .$_FILES["file"]["name"];

    if($_FILES["file"]["error"] > 0) {
        echo "Error Code: " . $_FILES["file"]["error"] . "<br />";
    }else {
        echo "Uploaded file: " . $_FILES["file"]["name"] . "<br />";
        echo "Type: " . $_FILES["file"]["type"] . "<br />";
        echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kilobytes<br />";

        if(file_exists($savePath)) {
            echo $_FILES["file"]["name"] . " already exists";
        }else {
            resizeImage($_FILES["file"]["tmp_name"], $savePath, $newWidth);
            echo "Done";
        }
    }
?>

php上传原始版本较小的图片版本

1 个答案: