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How to crop image in PHP


In this example we using PHP and jQuery for crop images.

index.php

<!DOCTYPE html>
<html lang="en">
<head>
  
  <meta http-equiv="Content-type" content="text/html;charset=UTF-8" />
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
  <script src="http://jcrop-cdn.tapmodo.com/v0.9.12/js/jquery.Jcrop.min.js"></script>
<link rel="stylesheet" href="http://jcrop-cdn.tapmodo.com/v0.9.12/css/jquery.Jcrop.css" type="text/css" />
 

<script type="text/javascript">

  $(function(){

    $('#cropbox').Jcrop({
      aspectRatio: 1,
      onSelect: updateCoords
    });

  });

  function updateCoords(c)
  {
    $('#x').val(c.x);
    $('#y').val(c.y);
    $('#w').val(c.w);
    $('#h').val(c.h);
  };

  function checkCoords()
  {
    if (parseInt($('#w').val())) return true;
    alert('Please select a crop region then press submit.');
    return false;
  };

</script>
<style type="text/css">
  #target {
    background-color: #ccc;
    width: 500px;
    height: 330px;
    font-size: 24px;
    display: block;
  }


</style>

</head>
<body>

<div class="container">
<div class="row">
<div class="span12">
<div class="jc-demo-box">

<div class="page-header">


</div>

		
		<img src="image/pool.jpg" id="cropbox" />

		
		<form action="crop.php" method="post" onsubmit="return checkCoords();">
			<input type="hidden" id="x" name="x" />
			<input type="hidden" id="y" name="y" />
			<input type="hidden" id="w" name="w" />
			<input type="hidden" id="h" name="h" />
			<input type="submit" value="Crop Image" class="btn btn-large btn-inverse" />
		</form>

	


	</div>
	</div>
	</div>
	</div>
	</body>

</html>

crop.php

<?php

if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
	$targ_w  = 200;
	$targ_h = 45;
	$jpeg_quality = 90;

	$src = 'image/pool.jpg';
	$img_r = imagecreatefromjpeg($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']);

	header('Content-type: image/jpeg');
	imagejpeg($dst_r,null,$jpeg_quality);

	exit;
}

/* If not a POST request, display page below: */

?>