TINY FILE UPLOAD ABSTRACTION LAYER

gistfile1.php

<?php
/*****************************| UPLOAD FILES |*****************************/
/**
	* TINY FILE UPLOAD ABSTRACTION LAYER
	*
	* @param object  $sysMsg   System Message object
	* @param string  $el       Name of _FILE element
	* @param string  $name     Name of new file
	* @param string  $kind     Kind of upload ["image"|"pdf"]
	* @param array   $dim      Dimension of image [0]=width [1]=height
	* @param string  $delFile  Name of file to be deleted
	*
	* @return array ["res"]=true|false
	*/
function uploadFile($sysMsg,$el,$name,$kind,$dim=array(),$delFile='') {
	$r=array();
	$r["res"]=false;

	if(empty($_FILES[$el]['type'])) $sysMsg->addMsg('No file selected',1);
	else {
		if(!is_writable(UPLOADF)) $sysMsg->addMsg('Upload folder not writeable',2);
		else {
			$chk=$chk2=0;
			$im=false;
			if($kind=="image") { //check through image conditions
				if($_FILES[$el]['type']!="image/jpeg") $sysMsg->addMsg('Image format not supported ('.$_FILES[$el]['type'].')',2);
				else {
					$dimEl=getimagesize($_FILES[$el]['tmp_name']);
					if(!empty($dim[0]) && $dimEl[0]<$dim[0] || !empty($dim[1]) && $dimEl[1]<$dim[1]) $sysMsg->addMsg('Image must be at least'.(!empty($dim[0]) ? ' '.$dim[0].'px wide' : '').(!empty($dim[1]) ? ' '.$dim[1].'px tall' : '').' (w:'.$dimEl[0].' h:'.$dimEl[1].')',2);
					else $im=true;
				}
			}
			$pdf=false;
			if($kind=="pdf" && $_FILES[$el]['type']!="application/pdf") $sysMsg->addMsg('PDF not recognized ('.$_FILES[$el]['type'].')',2);
			else $pdf=true;

			if($kind=="pdf" && $pdf===true || $kind=="image" && $im===true) { //upload file
				$chk+=move_uploaded_file($_FILES[$el]['tmp_name'],UPLOADF.$name);
				if((int)$chk!==1) $sysMsg->addMsg('Upload has failed ('.$_FILES[$el]['tmp_name'].'=>'.UPLOADF.$name.')',2);
			}
		}
	}

	if(!empty($delFile) && (int)$chk===1) { //delete old file
		$chk2=0;
		$chk2+=unlink(UPLOADF.$delFile);
		if((int)$chk2!==1) $sysMsg->addMsg('Unable to delete old image',1);
	}

	if((int)$chk===1) {
		$sysMsg->addMsg('Upload successful');
		$r["res"]=true;
	}

	return $r;
}