ms1inscription-v5/superadm/php/inc_files.php

<?php
//phpinfo();
//fonction pour téléverser un fichier
//param: nom du fichier, nom tempo du fichier téléversé, chemin du dossier
//retourne: nouveau nom du fichier
function fxUploadFile($strName, $strTmp, $strPath) {

	// get the file extension first
	$strExt = strtolower(substr(strrchr($strName, "."), 1));
	$strFilename = str_replace('.' . $strExt, '', strtolower(basename($strName)));
	$strNewName = fxRenameFile($strFilename, $strExt, '');


	$strTargetPath = $strPath . $strNewName;

    $moved =move_uploaded_file($strTmp, $strTargetPath);
    if( $moved ) {
     //echo($strTargetPath);
    } else {
     //   echo "Not uploaded because of error #".$_FILES["file"]["error"];
    }
	return $strNewName;
}

//fonction pour renommer un fichier à uploader
//param: nom du fichier, extension du fichier, préfixe
//retourne le nom du fichier renommée
function fxRenameFile($strName, $strExt, $strPrefixe) {
	$intRandom = rand(0000, 9999);
	$strSearch = array(" ", ",", "à", "â", "ä", "é", "è", "ê", "ë", "ì", "î", "ï", "ò", "ô", "ö", "ù", "û", "ü", "ç", "-", "'");
	$strReplace = array("_", "_", "a", "a", "a", "e", "e", "e", "e", "i", "i", "i", "o", "o", "o", "u", "u", "u", "c", "_", "_");
	
	$strNewName = str_replace($strSearch, $strReplace, $strName);
	$strNewName .= '_' . $intRandom . '.' . $strExt;
	
	if ($strPrefixe != '')
		$strNewName = $strPrefixe . '_' . $strNewName;
	
	$strNewName = strtolower($strNewName);
	
	return $strNewName;
}

//fonction pour redimensionner les images
//param: nom de l'image (sans extension), extension de l'image, chemin de l'image, largeur, hauteur, cropper l'image ?, qualité (en %), suffixe
//retourne le nom de l'image redimensionnée
function fxResizeImage($strImage, $strPath, $intWidth, $intHeight, $intCrop, $intQuality, $strSuffixe) {
	// get the file extension first
	$strExt = strtolower(substr(strrchr($strImage, "."), 1));
	$strImage = str_replace('.' . $strExt, '', strtolower(basename($strImage)));
	
	// Get the size and MIME type of the requested image
	$tabSize = getimagesize($strPath . $strImage . '.' . $strExt);
	$strMime = $tabSize['mime'];
	
	$intOriginalWidth = $tabSize[0];
	$intOriginalHeight	= $tabSize[1];
	
	$intMaxWidth = $intWidth;
	$intMaxHeight = $intHeight;
	
	// Ratio cropping
	$intOffsetX = 0;
	$intOffsetY = 0;
	
	if (($intOriginalWidth > $intMaxWidth) || ($intOriginalHeight > $intMaxHeight)) {
		if ($intCrop === 1) {
			$fltRatioComputed = $intOriginalWidth / $intOriginalHeight;
			$intThumbWidth = $intMaxWidth;
			$intThumbHeight = $intMaxHeight;
			
			if ($intMaxWidth != $intMaxHeight)
				$fltCropRatio = $intMaxWidth / $intMaxHeight;
			else
				$fltCropRatio = 1;
			
			if ($fltRatioComputed < $fltCropRatio) { // Image is too tall so we will crop the top and bottom
				$intOriginalHeight1 = $intOriginalHeight;
				$intOriginalHeight = $intOriginalWidth / $fltCropRatio;
				$intOffsetY = ($intOriginalHeight1 - $intOriginalHeight) / 2;
			}
			elseif ($fltRatioComputed > $fltCropRatio) { // Image is too wide so we will crop off the left and right sides
				$intOriginalWidth1 = $intOriginalWidth;
				$intOriginalWidth = $intOriginalHeight * $fltCropRatio;
				$intOffsetX = ($intOriginalWidth1 - $intOriginalWidth) / 2;
			}
		}
		else {
		    // Setting up the ratios needed for resizing. We will compare these below to determine how to
			// resize the image (based on height or based on width)
			$fltRatioX = $intMaxWidth / $intOriginalWidth;
			$fltRatioY = $intMaxHeight / $intOriginalHeight;
			
			if ($fltRatioX * $intOriginalHeight < $intMaxHeight)
			{ // Resize the image based on width
				$intThumbHeight = ceil($fltRatioX * $intOriginalHeight);
				$intThumbWidth = $intMaxWidth;
			}
			else { // Resize the image based on height
				$intThumbWidth = ceil($fltRatioY * $intOriginalWidth);
				$intThumbHeight = $intMaxHeight;
			}
		}
			
		// We don't want to run out of memory

		
		// Set up a blank canvas for our resized image (destination)
		$strDestination = imagecreatetruecolor($intThumbWidth, $intThumbHeight);
		
		// Set up the appropriate image handling functions based on the original image's mime type
		switch ($tabSize['mime']) {
			case 'image/gif':
				// We will be converting GIFs to PNGs to avoid transparency issues when resizing GIFs
				// This is maybe not the ideal solution, but IE6 can suck it
				$strCreationFunction = 'imagecreatefromgif';
				$strOutputFunction = 'imagepng';
				$strMime = 'image/png'; // We need to convert GIFs to PNGs
				$intQuality = round(10 - ($intQuality / 10)); // We are converting the GIF to a PNG and PNG needs a compression level of 0 (no compression) through 9
				$blnDoSharpen = false;
			break;
			
			case 'image/x-png':
			case 'image/png':
				$strCreationFunction = 'imagecreatefrompng';
				$strOutputFunction = 'imagepng';
				$intQuality = round(10 - ($intQuality / 10)); // PNG needs a compression level of 0 (no compression) through 9
				$blnDoSharpen = false;
			break;
			
			default:
				$strCreationFunction = 'imagecreatefromjpeg';
				$strOutputFunction = 'imagejpeg';
				$blnDoSharpen = true;
			break;
		}
		
		// Read in the original image
		$strSource = $strCreationFunction($strPath . $strImage . '.' . $strExt);
		$strResized = $strPath . $strImage . '_' . $strSuffixe . '.' . $strExt;
		
		if (in_array($tabSize['mime'], array('image/gif', 'image/png'))) {
			// If this is a GIF or a PNG, we need to set up transparency
			imagealphablending($strDestination, false);
			imagesavealpha($strDestination, true);
		}
		
		// Resample the original image into the resized canvas we set up earlier
		imagecopyresampled($strDestination, $strSource, 0, 0, $intOffsetX, $intOffsetY, $intThumbWidth, $intThumbHeight, $intOriginalWidth, $intOriginalHeight);
		
		if ($blnDoSharpen) {
			// Sharpen the image based on two things:
			//	(1) the difference between the original size and the final size
			//	(2) the final size
			$intSharpness	= findsharp($intOriginalWidth, $intThumbWidth);
			
			$tabSharpenMatrix	= array(
				array(-1, -2, -1),
				array(-2, $intSharpness + 12, -2),
				array(-1, -2, -1)
			);

			$intDivisor		= $intSharpness;
			$intOffset			= 0;

			imageconvolution($strDestination, $tabSharpenMatrix, $intDivisor, $intOffset);
		}
		
		// Write the resized image to the cache
		$strOutputFunction($strDestination, $strResized, $intQuality);
		
		// Clean up the memory
		imagedestroy($strSource);
		imagedestroy($strDestination);
		
		return str_replace($strPath, '', $strResized);
	 }
	 else
	 	return $strImage . '.' . $strExt;
}

// function from Ryan Rud (http://adryrun.com)
function findSharp($orig, $final) {
	$final	= $final * (750.0 / $orig);
	$a		= 52;
	$b		= -0.27810650887573124;
	$c		= .00047337278106508946;
	
	$result = $a + $b * $final + $c * $final * $final;
	
	return max(round($result), 0);
}
?>