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Sunday, October 18, 2020

How to upload and resize image in PHP

How to upload and resize image in PHP
upload_resize.html
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//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]);
            }
        }
        $("#imgInp").change(function(){
            readURL(this);
        });    
});
</script>
</head>
<body>
<style>
.btn-file {
    position: relative;
    overflow: hidden;
}
.btn-file input[type=file] {
    position: absolute;
    top: 0;
    right: 0;
    min-width: 100%;
    min-height: 100%;
    font-size: 100px;
    text-align: right;
    filter: alpha(opacity=0);
    opacity: 0;
    outline: none;
    background: white;
    cursor: inherit;
    display: block;
}
#img-upload{
    width: 100%;
}
</style>
<div class="container">
<div class="col-md-6"><p><h3>How to upload and resize image in PHP</h3></p>
    <form action="upload.php" method="post" enctype="multipart/form-data">
    <div class="form-group">
        <label>Upload Image</label>
        <div class="input-group">
            <span class="input-group-btn">
                <span class="btn btn-default btn-file">
                    Browse <input type="file" name="image" id="imgInp">
                </span>
            </span>
            <input type="text" class="form-control" readonly>
        </div>
        <img id='img-upload'/>
    </div>
    <div class="form-group">
    <input type="submit" name="submit" value="Submit" class="btn btn-primary"/>
    </div>
    </form>
</div>
</div>
</body>
</html>
upload.php
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//upload.php
<?php
if(isset($_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;
}
?>
Posted by ednalan at 11:41 PM . Under .

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