upload_resize.html
//upload_resize.html
<!DOCTYPE html>
<html>
<head>
<title>How to upload and resize image in PHP</title>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="https://code.jquery.com/jquery-1.11.1.min.js"></script>
<script>
$(document).ready( function() {
function readURL(input) {
if (input.files && input.files[0]) {
var reader = new FileReader();
reader.onload = function (e) {
$('#img-upload').attr('src', e.target.result);
}
reader.readAsDataURL(input.files[0]);
}
}
$("#imgInp").change(function(){
readURL(this);
});
});
</script>
</head>
<body>
<style>
.btn-file {
position: relative;
overflow: hidden;
}
.btn-file input[type=file] {
position: absolute;
top: 0;
right: 0;
min-width: 100%;
min-height: 100%;
font-size: 100px;
text-align: right;
filter: alpha(opacity=0);
opacity: 0;
outline: none;
background: white;
cursor: inherit;
display: block;
}
#img-upload{
width: 100%;
}
</style>
<div class="container">
<div class="col-md-6"><p><h3>How to upload and resize image in PHP</h3></p>
<form action="upload.php" method="post" enctype="multipart/form-data">
<div class="form-group">
<label>Upload Image</label>
<div class="input-group">
<span class="input-group-btn">
<span class="btn btn-default btn-file">
Browse <input type="file" name="image" id="imgInp">
</span>
</span>
<input type="text" class="form-control" readonly>
</div>
<img id='img-upload'/>
</div>
<div class="form-group">
<input type="submit" name="submit" value="Submit" class="btn btn-primary"/>
</div>
</form>
</div>
</div>
</body>
</html>
upload.php
//upload.php
<?php
if(isset($_POST["submit"])) {
if(is_array($_FILES)) {
$file = $_FILES['image']['tmp_name'];
$sourceProperties = getimagesize($file);
$fileNewName = time();
$folderPath = "upload/";
$ext = pathinfo($_FILES['image']['name'], PATHINFO_EXTENSION);
$imageType = $sourceProperties[2];
switch ($imageType) {
case IMAGETYPE_PNG:
$imageResourceId = imagecreatefrompng($file);
$targetLayer = imageResize($imageResourceId,$sourceProperties[0],$sourceProperties[1]);
imagepng($targetLayer,$folderPath. $fileNewName. "_thump.". $ext);
break;
case IMAGETYPE_GIF:
$imageResourceId = imagecreatefromgif($file);
$targetLayer = imageResize($imageResourceId,$sourceProperties[0],$sourceProperties[1]);
imagegif($targetLayer,$folderPath. $fileNewName. "_thump.". $ext);
break;
case IMAGETYPE_JPEG:
$imageResourceId = imagecreatefromjpeg($file);
$targetLayer = imageResize($imageResourceId,$sourceProperties[0],$sourceProperties[1]);
imagejpeg($targetLayer,$folderPath. $fileNewName. "_thump.". $ext);
break;
default:
echo "Invalid Image type.";
exit;
break;
}
move_uploaded_file($file, $folderPath. $fileNewName. ".". $ext);
echo "Image Resize Successfully.";
}
}
function imageResize($imageResourceId,$width,$height) {
$targetWidth =340;
$targetHeight =339;
$targetLayer=imagecreatetruecolor($targetWidth,$targetHeight);
imagecopyresampled($targetLayer,$imageResourceId,0,0,0,0,$targetWidth,$targetHeight, $width,$height);
return $targetLayer;
}
?>
