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File upload: Resize image and reposition on new canvas

/ Published in: PHP
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Resize and image to fit a predetermined canvas size

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  1. // NOW UPLOAD THE LOGO
  2.  
  3. 					$formname = 'CompanyLogo';				
  4.  
  5. 					if(isset($_FILES[$formname]['name'])){
  6. 						$name = stripslashes($_FILES[$formname]['name']);
  7.  
  8. 						if ($name!=""){
  9.  
  10. 							$name = str_replace(" ", "_" , $name) ;
  11.  
  12. 							//if(move_uploaded_file($_FILES[$formname]['tmp_name'], "../images_cms/{$name}")){
  13.  
  14.  
  15. 							$extension = getExtension($name);
  16. 							$extension = strtolower($extension);
  17. 							if (($extension != "jpg") && ($extension != "jpeg") && ($extension != "png") && ($extension != "gif")) {
  18. 								echo ' Unknown Image extension ';
  19. 								$errors=1;
  20.  
  21. 							}else{
  22.  
  23. 								$size=filesize($_FILES[$formname]['tmp_name']);
  24.  
  25. 								//if ($size > MAX_SIZE*1024){
  26. 									//echo "You have exceeded the size limit";
  27. 									//$errors=1;
  28. 								//}
  29.  
  30. 								if($extension=="jpg" || $extension=="jpeg" ){
  31. 									$uploadedfile = $_FILES[$formname]['tmp_name'];
  32. 									$src = imagecreatefromjpeg($uploadedfile);
  33. 								}else if($extension=="png"){
  34. 									$uploadedfile = $_FILES[$formname]['tmp_name'];
  35. 									$src = imagecreatefrompng($uploadedfile);
  36. 								}else{
  37. 									$src = imagecreatefromgif($uploadedfile);
  38. 								}
  39.  
  40. 								list($width,$height)=getimagesize($uploadedfile);
  41.  
  42. 								$canvasW = 230 ;
  43. 								$canvasH = 78 ;
  44.  
  45. 								$newwidth = $canvasW;
  46. 								$newheight = ($height/$width)*$newwidth;
  47.  
  48. 								// IF THE PROPOTIONS ARE WRONG
  49.  
  50. 								if ($newheight > $canvasH) {
  51.  
  52. 									$newheight = $canvasH;
  53. 									$newwidth=($width/$height)*$newheight;
  54.  
  55. 								}
  56.  
  57. 								$offsetY = intval( ($canvasH-$newheight)/2 );
  58.  
  59. 								$tmp=imagecreatetruecolor($canvasW,$canvasH);
  60.  
  61. 								$white=imagecolorallocate($tmp,255,255,255);
  62. 								imagefilledrectangle($tmp,0,0,$canvasW,$canvasH,$white);
  63.  
  64. 								// imagecopyresampled ( resource $dst_image , resource $src_image , 
  65. 									// int $dst_x , int $dst_y , 
  66. 									// int $src_x , int $src_y , 
  67. 									// int $dst_w , int $dst_h , int $src_w , int $src_h )
  68.  
  69. 								imagecopyresampled($tmp,$src,
  70. 									0,$offsetY,
  71. 									0,0,
  72. 									$newwidth,$newheight,
  73. 									$width,$height);
  74.  
  75. 								$imgPath = "../images_cms/{$name}" ;
  76.  
  77. 								imagejpeg($tmp,$imgPath,100);
  78.  
  79. 								imagedestroy($src);
  80. 								imagedestroy($tmp);
  81.  
  82.  
  83.  
  84. 								$sql_cmpy=" UPDATE `cms_companies`  SET `CompanyLogo`='$name' WHERE `companyID`='$companyID' ";
  85. 								$result_cmpy=doSQL($sql_cmpy);
  86.  
  87. 							} // END if $extention
  88. 						} // END if $name
  89. 					} // END LOGO

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