мое обрезанное изображение — просто черная коробка размером 2 КБ?

Question

мое обрезанное изображение — просто черная коробка размером 2 КБ?

Я использую следующее PHP код для сохранения обрезанного изображения из jcrop,

$targ_w = $targ_h = 150;
$jpeg_quality = 90;

$src = "../profiles/";
$src = $target . basename( $_FILES['userfile']['name']);
$img_r = imagecreatefromjpeg($src);
$dst_r = ImageCreateTrueColor( $targ_w, $targ_h );

imagecopyresampled($dst_r,$img_r,0,0,$_POST['x'],$_POST['y'],
$targ_w,$targ_h,$_POST['w'],$_POST['h']);imagejpeg($dst_r, "simple2.jpg", $jpeg_quality);

simple2.jpg сохраняется в каталоге, но это просто черный квадрат размером 2 КБ. Я хочу, чтобы обрезанная часть была сохранена. Как это исправить?

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jcrop php

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Accepted Answer

Использовать этот

index.php

<html lang="en" >
<head>
<meta charset="utf-8" />
<meta name="author" content="Script Tutorials" />
<title>HTML5 Image uploader with Jcrop | Script Tutorials</title>

<!-- add styles -->
<link href="css/main.css" rel="stylesheet" type="text/css" />
<link href="css/jquery.Jcrop.min.css" rel="stylesheet" type="text/css" />

<!-- add scripts -->
<script src="js/jquery.min.js"></script>
<script src="js/jquery.Jcrop.min.js"></script>
<script src="js/script.js"></script>
</head>

<body>
<header>
<h2>HTML5 Image uploader with Jcrop </h2>
</header>

<div class="demo">
<div class="bheader"><h2>-- Image upload form --</h2></div>

<div class="bbody">
<!-- upload form -->
<form id="upload_form" enctype="multipart/form-data" method="post" action="upload.php" onsubmit="return checkForm()">

<!-- hidden crop params -->
<input type="hidden" id="x1" name="x1" />
<input type="hidden" id="y1" name="y1" />
<input type="hidden" id="x2" name="x2" />
<input type="hidden" id="y2" name="y2" /><h2>Step1: Please select image file</h2>
<div>
<input type="file" name="image_file" id="image_file" onchange="fileSelectHandler()" />
</div>

<div class="error"></div><div class="step2">
<h2>Step2: Please select a crop region</h2>
<img id="preview" />

<div class="info">
<label>File size</label>
<input type="text" id="filesize" name="filesize" />

<label>Type</label>
<input type="text" id="filetype" name="filetype" />

<label>Image dimension</label>
<input type="text" id="filedim" name="filedim" />
<label>W</label> <input type="text" id="w" name="w" />
<label>H</label> <input type="text" id="h" name="h" />
</div>

<input type="submit" value="Upload" />
</div>
</form>
</div>
</div>
</body>
</html>

upload.php

<?php
function uploadImageFile() { // Note: GD library is required for this function

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
// $iWidth = $iHeight = 200; // desired image result dimensions

$iWidth=abs($_POST['x2']-$_POST['x1']);
$iHeight=abs($_POST['y2']-$_POST['y1']);$iJpgQuality = 90;

if ($_FILES) {

// if no errors and size less than 250kb
if (! $_FILES['image_file']['error'] && $_FILES['image_file']['size'] < 250 * 1024)             {
if (is_uploaded_file($_FILES['image_file']['tmp_name'])) {

// new unique filename
$sTempFileName = 'cache/' . md5(time().rand());

//  mkdir("cache",0664,true);
chmod('cache', 0664);

//echo $url = $_SERVER['SERVER_NAME'] . dirname(__FILE__);
//echo '<br>';
$root=$_SERVER['DOCUMENT_ROOT'];$newsTempFileName = $root.'/beta/nikhil/demo/jquery-images-direct-crop/'.$sTempFileName;
// move uploaded file into cache folder
move_uploaded_file($_FILES['image_file']['tmp_name'], $newsTempFileName);// change file permission to 644
@chmod($sTempFileName, 0644);if (file_exists($sTempFileName) && filesize($sTempFileName) > 0) {
$aSize = getimagesize($sTempFileName); // try to obtain image info
if (!$aSize) {
@unlink($sTempFileName);
return;
}// check for image type
switch($aSize[2]) {
case IMAGETYPE_JPEG:
$sExt = '.jpg';

// create a new image from file
$vImg = @imagecreatefromjpeg($sTempFileName);
break;
case IMAGETYPE_PNG:
$sExt = '.png';

// create a new image from file
$vImg = @imagecreatefrompng($sTempFileName);
break;
default:
@unlink($sTempFileName);
return;
}

// create a new true color image
$vDstImg = @imagecreatetruecolor( $iWidth, $iHeight );

// copy and resize part of an image with resampling
imagecopyresampled($vDstImg, $vImg, 0, 0, (int)$_POST['x1'], (int)$_POST['y1'], $iWidth, $iHeight, (int)$_POST['w'], (int)$_POST['h']);

// define a result image filename
$sResultFileName = $sTempFileName . $sExt;

// output image to file
imagejpeg($vDstImg, $sResultFileName, $iJpgQuality);
@unlink($sTempFileName);

return $sResultFileName;
}
}
}
}
}
}

$sImage = uploadImageFile();
echo '<img src="'.$sImage.'" />';
?>

Демонстрация в реальном времени: https://www.script-tutorials.com/demos/316/index.html
добавить jquery и css

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