Question

我有一个PHP脚本，我可以动态调用它来实现图像。

这个脚本可以找到除了大写的JPG文件以外我用过的所有东西，我已经上传了这些并将扩展名转换为小写但是在重新调整大小后仍然会抛出错误。

是否有人遇到此问题或设法解决此问题？

我正在使用的脚本：

<?php
$source_image = $_GET["i"];
$width = $_GET["w"];
$height = $_GET["h"];
$quality = $_GET["q"];
$crop = $_GET["c"];
// If the source image isn't an image seriously we got issues
if( ! $image_data = getimagesize( $source_image ) ){
    die( "Whoa can't get the image size of the original?" );    
}
// Is it a gif, jpg or png. Sorry anything else probably not worth it.
switch( strtolower($image_data['mime']) ){
case 'image/gif':
    $get_func = 'imagecreatefromgif';
    $suffix = ".gif";
    break;
case 'image/jpeg';
    $get_func = 'imagecreatefromjpeg';
    $suffix = ".jpg";
    break;
case 'image/png':
    $get_func = 'imagecreatefrompng';
    $suffix = ".png";
    break;
}


// Setup some variables
$img_original = call_user_func( $get_func, $source_image );
$old_width = $image_data[0];
$old_height = $image_data[1];
$new_width = $width;
$new_height = $height;
$src_x = 0;
$src_y = 0;
$current_ratio = round( $old_width / $old_height, 2 );
$desired_ratio_after = round( $width / $height, 2 );
$desired_ratio_before = round( $height / $width, 2 );

// Some people don't want to upscale images. I don't care
// Uncomment if you want crash out and not upscale.

if( $old_width < $width || $old_height < $height )  {
    header('Content-Type: image/jpeg');
    imagejpeg( $img_original, NULL, $quality );
}




/**
  * If the crop option is left on, it will take an image and best fit it
  * so it will always come out the exact specified size.
  */
if( $crop )
{
/**
  * create empty image of the specified size
  */
$new_image = imagecreatetruecolor( $width, $height );

/**
  * Landscape Image
  */
if( $current_ratio > $desired_ratio_after )
{
$new_width = $old_width * $height / $old_height;
}

/**
  * Nearly square ratio image.
  */
if( $current_ratio > $desired_ratio_before && $current_ratio < $desired_ratio_after )
{
if( $old_width > $old_height )
{
$new_height = max( $width, $height );
$new_width = $old_width * $new_height / $old_height;
}
else
{
$new_height = $old_height * $width / $old_width;
}
}

/**
  * Portrait sized image
  */
if( $current_ratio < $desired_ratio_before )  {
    $new_height = $old_height * $width / $old_width;
}

    /**
      * Find out the ratio of the original photo to it's new, thumbnail-based size
      * for both the width and the height. It's used to find out where to crop.
      */
    $width_ratio = $old_width / $new_width;
    $height_ratio = $old_height / $new_height;

    /**
      * Calculate where to crop based on the center of the image
      */
    $src_x = floor( ( ( $new_width - $width ) / 2 ) * $width_ratio );
    $src_y = round( ( ( $new_height - $height ) / 2 ) * $height_ratio );
    }
    /**
      * Don't crop the image, just resize it proportionally
      */
else {
    if( $old_width > $old_height ){
        $ratio = max( $old_width, $old_height ) / max( $width, $height );
    }else{
        $ratio = max( $old_width, $old_height ) / min( $width, $height );
    }

    $new_width = $old_width / $ratio;
    $new_height = $old_height / $ratio;

    $new_image = imagecreatetruecolor( $new_width, $new_height );
}

/**
  * Where all the real magic happens
  */
imagecopyresampled( $new_image, $img_original, 0, 0, $src_x, $src_y, $new_width, $new_height, $old_width, $old_height );

/**
  * Save it as a JPG File with our $destination_filename param.
  */
header('Content-Type: image/jpeg');
imagejpeg( $new_image, NULL, $quality );

/**
  * Destroy the evidence!
  */
imagedestroy( $new_image );
imagedestroy( $img_original );

?>

Answer 1

我认为我遇到的问题与我用于调整大小的PHP函数有关，我使用了类似的脚本：http://shiftingpixel.com/2008/03/03/smart-image-resizer/

并没有遇到任何问题，该脚本使用GD库，所以它更快一点等。

感谢您尝试帮助Hamza。

PHP，Image resize会抛出大写JPG文件的错误

1 个答案: