php裁剪图像的一部分并将其保存为给定路径上的thumball。没有任何外部jquery库
我有很多大尺寸的图像,我只想裁剪这些图像的中间部分(100x100),以原始分辨率,并将其保存为给定路径上的thumball。这是我的php裁剪图像的一部分并将其保存为给定路径上的thumball。没有任何外部jquery库,php,image,crop,Php,Image,Crop,我有很多大尺寸的图像,我只想裁剪这些图像的中间部分(100x100),以原始分辨率,并将其保存为给定路径上的thumball。这是我的 <?php $img = "../QcImages/file.jpg"; square_crop($img,'old.jpg'); function square_crop($src_image, $dest_image, $thumb_size = 100, $jpg_quality = 90) { // Get dimensions of e
<?php
$img = "../QcImages/file.jpg";
square_crop($img,'old.jpg');
function square_crop($src_image, $dest_image, $thumb_size = 100, $jpg_quality = 90) {
// Get dimensions of existing image
$image = getimagesize($src_image);
// Check for valid dimensions
if( $image[0] <= 0 || $image[1] <= 0 ) return false;
// Determine format from MIME-Type
$image['format'] = strtolower(preg_replace('/^.*?\//', '', $image['mime']));
// Import image
switch( $image['format'] ) {
case 'jpg':
case 'jpeg':
$image_data = imagecreatefromjpeg($src_image);
break;
case 'png':
$image_data = imagecreatefrompng($src_image);
break;
case 'gif':
$image_data = imagecreatefromgif($src_image);
break;
default:
// Unsupported format
return false;
break;
}
// Verify import
if( $image_data == false ) return false;
// Calculate measurements
if( $image[0] & $image[1] ) {
// For landscape images
$x_offset = ($image[0] - $image[1]) / 2;
$y_offset = 0;
$square_size = $image[0] - ($x_offset * 2);
} else {
// For portrait and square images
$x_offset = 400;
$y_offset = ($image[1] - $image[0]) / 2;
$square_size = $image[1] - ($y_offset * 2);
}
// Resize and crop
$img = imagecreatetruecolor('100','100'); // I created a new canvas
$canvas = imagecreatetruecolor($thumb_size, $thumb_size);
imagecopy($img,$image_data, 0, 0, 120, 120, 200, 150); // Edited new code
$canvas = imagecreatetruecolor($thumb_size, $thumb_size);
if( imagecopyresampled(
$canvas,
$image_data, /// i know this is actual image which is copied in new thumball image but i have no idea how to crop only little part of it rather than using whole image.
0,
0,
$x_offset, // i tried editing this offset
$y_offset, // and this offset
$thumb_size,
$thumb_size,
$square_size,
$square_size
)) {
// Create thumbnail
switch( strtolower(preg_replace('/^.*\./', '', $dest_image)) ) {
case 'jpg':
case 'jpeg':
//return imagejpeg($canvas, $dest_image, $jpg_quality);//
return imagejpeg($img,$dest_image,90);// New Edited
break;
case 'png':
return imagepng($canvas, $dest_image);
break;
case 'gif':
return imagegif($canvas, $dest_image);
break;
default:
// Unsupported format
return false;
break;
}
} else {
return false;
}
}
?>
但这段代码调整整个图像的大小并将其保存为thumball。。。我不想调整整个图像的大小,我只想裁剪任何部分形状的图像大小(100X100),并将其保存为拇指。对不起,英语不好
谢谢你让我编辑代码。。我用一些新的编辑再次尝试了这段代码,它工作得很好,非常感谢 然后将匹配的坐标输入到
imagecopyresampled
…我试过了,但不起作用。。你能举个例子吗?向我们展示(并解释)你尝试了什么(通过编辑你的问题)。非常感谢你,我编辑这段代码是为了告诉你我在哪里遇到了问题。。并试图再次执行。。并取得了预期的效果。。。谢谢:)