JavaScript Editor Javascript debugger     Website design 


Enable or disable interlace (PHP 4, PHP 5)
int imageinterlace ( resource image [, int interlace] )

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.



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


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.