asked on
<!DOCTYPE html>
<html>
<head>
<title>PHP Crop Image Before Upload using Cropper JS</title>
<meta name="_token" content="{{ csrf_token() }}">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.js" i</script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.4.1/css/bootstrap.min.css" crossorigin="anonymous" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.4.1/js/bootstrap.min.js" </script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/cropperjs/1.5.6/cropper.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/cropperjs/1.5.6/cropper.js" i</script>
</head>
<style type="text/css">
img {
display: block;
max-width: 100%;
}
.preview {
overflow: hidden;
width: 160px;
height: 160px;
margin: 10px;
border: 1px solid red;
}
.modal-lg{
max-width: 1000px !important;
}
</style>
<body>
<div class="container">
<h1>PHP Crop Image Before Upload using Cropper JS</h1>
<form method="post">
<input type="file" name="image" class="image">
</form>
<br />
<div id="uploaded_image"></div>
</div>
<div class="modal fade" id="modal" tabindex="-1" role="dialog" aria-labelledby="modalLabel" aria-hidden="true">
<div class="modal-dialog modal-lg" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="modalLabel">Single Crop</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true"></span>
</button>
</div>
<div class="modal-body">
<div class="img-container">
<div class="row">
<div class="col-md-8">
<img id="image" src="https://avatars0.githubusercontent.com/u/3456749">
</div>
<div class="col-md-4">
<div class="preview"></div>
</div>
</div>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Cancel</button>
<button type="button" class="btn btn-primary" id="crop">Crop</button>
</div>
</div>
</div>
</div>
</div>
</div>
<script>
var $modal = $('#modal');
var image = document.getElementById('image');
var cropper;
$("body").on("change", ".image", function(e){
var files = e.target.files;
var done = function (url) {
image.src = url;
$modal.modal('show');
};
var reader;
var file;
var url;
if (files && files.length > 0) {
file = files[0];
if (URL) {
done(URL.createObjectURL(file));
} else if (FileReader) {
reader = new FileReader();
reader.onload = function (e) {
done(reader.result);
};
reader.readAsDataURL(file);
}
}
});
$modal.on('shown.bs.modal', function () {
cropper = new Cropper(image, {
aspectRatio: 4/5,
viewMode: 3,
preview: '.preview'
});
}).on('hidden.bs.modal', function () {
cropper.destroy();
cropper = null;
});
$("#crop").click(function(){
canvas = cropper.getCroppedCanvas({
width: 600, // Adjust here
height: 600,
});
canvas.toBlob(function(blob) {
url = URL.createObjectURL(blob);
var reader = new FileReader();
reader.readAsDataURL(blob);
reader.onloadend = function() {
var base64data = reader.result;
$.ajax({
type: "POST",
dataType: "json",
url: "upload.php",
data: {image: base64data},
success: function(data){
console.log(data);
$modal.modal('hide');
$("#uploaded_image").html(data);
}
});
}
});
})
</script>
</body>
</html>
upload.php<?php
if(isset($_POST["image"]))
{
$folderPath = 'upload/';
$image_parts = explode(";base64,", $_POST['image']);
$image_type_aux = explode("image/", $image_parts[0]);
$image_type = $image_type_aux[1];
$image_base64 = base64_decode($image_parts[1]);
$file = $folderPath . uniqid() . '.png';
file_put_contents($file, $image_base64);
echo json_encode(["image uploaded successfully."]);
}
?>
ASKER
PHP is a widely-used server-side scripting language especially suited for web development, powering tens of millions of sites from Facebook to personal WordPress blogs. PHP is often paired with the MySQL relational database, but includes support for most other mainstream databases. By utilizing different Server APIs, PHP can work on many different web servers as a server-side scripting language.
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I am just wondering how this would work - how would a crop tool interpret this? Would it see each crop area as applying to the whole image - or would it have to deal with overlapping areas.
From a usability perspective I am trying to see how this will work in a non-confusing way. If you need to create two crops then create two crops - one at a time so the user knows what the crop is for - clear distinction of function and purpose.
This can either be in the same page (as per the cropper multi example) or in a pipeline / wizard format where the first crop is done and transitioned off page and the second is displayed.
What benefits are there (assuming it is possible with this tool) for doing the crop on the same image?