IMAGEINTERLACE(3) 1 IMAGEINTERLACE(3)
imageinterlace - Enable or disable interlace
SYNOPSIS
int imageinterlace (resource $image, [int $interlace])
DESCRIPTION
imageinterlace(3) turns the interlace bit on or off.
If the interlace bit is set and the image is used as a JPEG image, the image is created as a progressive JPEG.
PARAMETERS
o $
image -An image resource, returned by one of the image creation functions, such as imagecreatetruecolor(3).
o $interlace
- If non-zero, the image will be interlaced, else the interlace bit is turned off.
RETURN VALUES
Returns 1 if the interlace bit is set for the image, 0 otherwise.
EXAMPLES
Example #1
Turn on interlacing using imageinterlace(3)
<?php
// Create an image instance
$im = imagecreatefromgif('php.gif');
// Enable interlancing
imageinterlace($im, true);
// Save the interlaced image
imagegif($im, './php_interlaced.gif');
imagedestroy($im);
?>
PHP Documentation Group IMAGEINTERLACE(3)
