imagecopyresized PHP GD Function

Copy and resized the specific part of an image

Syntax:

bool imagecopyresized ( resource $dst_image , resource $src_image , int $dst_x , int $dst_y , int $src_x , int $src_y , int $dst_w , int $dst_h , int $src_w , int $src_h )

imagecreatefromjpeg PHP GD Function

Create a new image from a url or uploaded by file control

syntax:

resource imagecreatefromjpeg ( string $filename )

Argument Detail:

filename Path to the JPEG image.

Return Values :

imagecreatetruecolor PHP GD Function

The imagecreatetruecolor () function is used in PHP to create a new true color image using the GD Library.

resource imagecreatetruecolor ( int $width , int $height )

width
Image width for creating

height
Image height for creating

getimagesize PHP Function

Get the size of an image

array getimagesize ( string $filename [, array &$imageinfo ] )

The getimagesize() function will determine the size of any given image file and return the dimensions along with the file type and a height/width text string to be used inside a normal HTML IMG tag and the correspondent HTTP content type.

list($width, $height) = getimagesize($_FILES['file']['tmp_name']);
echo $width;
echo $height;