synritical

Error is: Warning: imagesx() expects parameter 1 to be resource, boolean given in C:\xampp\htdocs\resize-class.php on line 30 Warning: imagesy() expects parameter 1 to be resource, boolean given in C:\xampp\htdocs\resize-class.php on line 31 Warning: imagecopyresampled() expects parameter 2 to be resource, boolean given in C:\xampp\htdocs\resize-class.php on line 73 I'm guessing it has something to do with the class, which is Class resize { // *** Class variables private $image; private $width; private $height; private $imageResized; function __construct($fileName) { // *** Open up the file $this->image = $this->openImage($fileName); // *** Get width and height $this->width = imagesx($this->image); $this->height = imagesy($this->image); } ## -------------------------------------------------------- private function openImage($file) { // *** Get extension $extension = strtolower(strrchr($file, '.')); switch($extension) { case '.jpg': case '.jpeg': $img = @imagecreatefromjpeg($file); break; case '.gif': $img = @imagecreatefromgif($file); break; case '.png': $img = @imagecreatefrompng($file); break; default: $img = false; break; } return $img; } ## -------------------------------------------------------- public function resizeImage($newWidth, $newHeight, $option="auto") { $optionArray = $this->getDimensions($newWidth, $newHeight, $option); $optimalWidth = $optionArray['optimalWidth']; $optimalHeight = $optionArray['optimalHeight']; $this->imageResized = imagecreatetruecolor($optimalWidth, $optimalHeight); imagecopyresampled($this->imageResized, $this->image, 0, 0, 0, 0, $optimalWidth, $optimalHeight, $this->width, $this->height); if ($option == 'crop') { $this->crop($optimalWidth, $optimalHeight, $newWidth, $newHeight); } } ## -------------------------------------------------------- private function getDimensions($newWidth, $newHeight, $option) { switch ($option) { case 'exact': $optimalWidth = $newWidth; $optimalHeight= $newHeight; break; case 'portrait': $optimalWidth = $this->getSizeByFixedHeight($newHeight); $optimalHeight= $newHeight; break; case 'landscape': $optimalWidth = $newWidth; $optimalHeight= $this->getSizeByFixedWidth($newWidth); break; case 'auto': $optionArray = $this->getSizeByAuto($newWidth, $newHeight); $optimalWidth = $optionArray['optimalWidth']; $optimalHeight = $optionArray['optimalHeight']; break; case 'crop': $optionArray = $this->getOptimalCrop($newWidth, $newHeight); $optimalWidth = $optionArray['optimalWidth']; $optimalHeight = $optionArray['optimalHeight']; break; } return array('optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight); } ## -------------------------------------------------------- private function getSizeByFixedHeight($newHeight) { $ratio = $this->width / $this->height; $newWidth = $newHeight * $ratio; return $newWidth; } private function getSizeByFixedWidth($newWidth) { $ratio = $this->height / $this->width; $newHeight = $newWidth * $ratio; return $newHeight; } private function getSizeByAuto($newWidth, $newHeight) { if ($this->height < $this->width) // *** Image to be resized is wider (landscape) { $optimalWidth = $newWidth; $optimalHeight= $this->getSizeByFixedWidth($newWidth); } elseif ($this->height > $this->width) // *** Image to be resized is taller (portrait) { $optimalWidth = $this->getSizeByFixedHeight($newHeight); $optimalHeight= $newHeight; } else // *** Image to be resizerd is a square { if ($newHeight < $newWidth) { $optimalWidth = $newWidth; $optimalHeight= $this->getSizeByFixedWidth($newWidth); } else if ($newHeight > $newWidth) { $optimalWidth = $this->getSizeByFixedHeight($newHeight); $optimalHeight= $newHeight; } else { // *** Sqaure being resized to a square $optimalWidth = $newWidth; $optimalHeight= $newHeight; } } return array('optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight); } ## -------------------------------------------------------- private function getOptimalCrop($newWidth, $newHeight) { $heightRatio = $this->height / $newHeight; $widthRatio = $this->width / $newWidth; if ($heightRatio < $widthRatio) { $optimalRatio = $heightRatio; } else { $optimalRatio = $widthRatio; } $optimalHeight = $this->height / $optimalRatio; $optimalWidth = $this->width / $optimalRatio; return array('optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight); } ## -------------------------------------------------------- private function crop($optimalWidth, $optimalHeight, $newWidth, $newHeight) { $cropStartX = ( $optimalWidth / 2) - ( $newWidth /2 ); $cropStartY = ( $optimalHeight/ 2) - ( $newHeight/2 ); $crop = $this->imageResized; $this->imageResized = imagecreatetruecolor($newWidth , $newHeight); imagecopyresampled($this->imageResized, $crop , 0, 0, $cropStartX, $cropStartY, $newWidth, $newHeight , $newWidth, $newHeight); } ## -------------------------------------------------------- public function saveImage($savePath, $imageQuality="100") { // *** Get extension $extension = strrchr($savePath, '.'); $extension = strtolower($extension); switch($extension) { case '.jpg': case '.jpeg': if (imagetypes() & IMG_JPG) { imagejpeg($this->imageResized, $savePath, $imageQuality); } break; case '.gif': if (imagetypes() & IMG_GIF) { imagegif($this->imageResized, $savePath); } break; case '.png': // *** Scale quality from 0-100 to 0-9 $scaleQuality = round(($imageQuality/100) * 9); // *** Invert quality setting as 0 is best, not 9 $invertScaleQuality = 9 - $scaleQuality; if (imagetypes() & IMG_PNG) { imagepng($this->imageResized, $savePath, $invertScaleQuality); } break; // ... etc default: // *** THIS REQUIRES RECEPTION TO BE SOMEWHAT CLEVER. THEY MUST SPECIFY THE EXTENSION!!! break; } imagedestroy($this->imageResized); }

Thanks for your reply! However, I already tried both of those ways - using double quotes causes it to be interpreted literally as $file, ie not render the variable at all. Using double quotes throws up a PHP error. Stuck!

Hello! I'm very new to PHP, and I'm sure this is a noob question - still, its got me stuck! How would I best escape this properly? $resizeObj = new resize('C:\xampp\htdocs\images_test\$file'); so that $file is parsed? the whole script is as follows: <?php // *** Include Nathan's class include("resize-class.php"); // Define the full path to your folder from root $path = 'C:\xampp\htdocs\images_test'; // Open the folder $dir_handle = @opendir($path) or die("Unable to open $path"); // Loop through the files while ($file = readdir($dir_handle)) { if($file == "." || $file == ".." || $file == "index.php" ) continue; // *** 1) Initialise / load image $resizeObj = new resize('C:\xampp\htdocs\images_test\$file'); // *** 2) Resize image $resizeObj -> resizeImage(100, 100, 'auto'); // *** 3) Save image $resizeObj -> saveImage('C:\xampp\htdocs\images_test\$file', 90); echo "<a href=\"$file\">$file</a><br />"; echo $path; } // Close closedir($dir_handle); ?>