class-uploadFile.php

<?php

class uploadFile {

	public $filename;

	private $filepath = './';

	public $fullpath;

	public $error;

	public function __construct() {
		return true;
	}

	public function set_dir( $dir ) {
		return is_dir($dir) ? $this->filepath = $dir : false;
	}

	public function change_format( $path ) {
		// de png a jpg.
		chmod($path, 0777);
		$x = imagecreatefrompng($path);
		imagejpeg($x, $path, 80) or die("error!"); // buena calidad, igual es JPG y pesa menos.
		imagedestroy($x);
		$this->type = "jpg";
		return $l;
	}
	function getsize() {
		$x = getimagesize($this->tmp_name);
		return array($x[0], $x[1] );
	}
	public function upload( $file ) {
		if( @empty($_FILES[$file]) ){
			$this->error = "No file was selected.";
			return false;
		}
		if( is_array($_FILES[$file]['name']) ) {
			$this->error = "Cheatin', uh?!";
			return false;
		}
		if( isset($_FILES[$file]["error"])  && $_FILES[$file]["error"] != 0) {
			$this->error = "¡Error! [{$_FILES[$file]['error']}]";
			return false;
		}
		$name = $_FILES[$file]['name'];
		$size = $_FILES[ $file ][ "size" ];
		$this->tmp_name = $_FILES[ $file ][ "tmp_name"];
		if( ! in_array( $type = @exif_imagetype($this->tmp_name), array(IMAGETYPE_GIF, IMAGETYPE_PNG, IMAGETYPE_JPEG) ) || false === @getimagesize($this->tmp_name) ) {
			$this->error = "Invalid image type!";
			return false;
		}
		if( ( ($size > 1024) / 1024) > 4 ) {
			$this->error = "Image can't be greater than 5mb";
			return false;
		}
		$this->type = IMAGETYPE_GIF == $type ? 'gif' : IMAGETYPE_JPEG == $type ? 'jpg' : 'png';
		if( "png" == $this->type )
			$this->change_format($this->tmp_name); // ahora es JPG.
		/** Todo listo! Imagen JPG o GIF. Lista para todo :) */
		return true;
	}
	public function move() {
		$this->name = substr( md5(uniqid().rand(1,100) ), 0, 15);
		$this->fullpath = $this->filepath . $this->name . "." . $this->type;
		$r = move_uploaded_file($this->tmp_name, $this->fullpath);
		chmod($this->fullpath, 0777);
		return $r;
	}
	public function resize($array, $new = '') {
		if( is_null($this->fullpath) )
			return false;
		if( is_array($array) && 2 == count($array) ):
			$width = $array[0];
			$height = $array[1];
		elseif( 'auto' == $array ):
			$size = getimagesize($this->fullpath);
			$height = round(500*$size[1]/$size[0]);
			$width	= 500;
		endif;
		$call = $this->type == "jpg" ? "imagecreatefromjpeg" : "imagecreatefromgif";
		$call2 = $this->type == "jpg" ? "imagejpeg" : "imagegif";
		$img_o = $call($this->fullpath);
		$img_f = imagecreatetruecolor($width, $height);
		$pX = imagesX($img_o);
		$pY = imagesY($img_o);
		imagecopyresampled($img_f, $img_o, 0, 0, 0, 0, $width+1, $height+1, $pX, $pY);
		if( empty($new) )
			$call2($img_f, $this->fullpath);
		else
			$call2($img_f, $this->filepath . $new);
		imagedestroy($img_o);
		imagedestroy($img_f);
		return true;
	}
}