imageinterlace

(PHP 4, PHP 5, PHP 7)

Enable or disable interlace

int imageinterlace ( resource $image [, int $interlace = 0 ] )

imageinterlace() 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:

image

An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().

interlace

If non-zero, the image will be interlaced, else the interlace bit is turned off.

Returns:

Returns 1 if the interlace bit is set for the image, 0 otherwise.

Examples:

Turn on interlacing using imageinterlace()

<?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);
?>

Links:

http://php.net/manual/en/function.imageinterlace.php

doc_php

2025-01-10 15:47:30

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