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Editorial Team
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Asked: 2026-05-13T15:43:59+00:00

In PHP; what format is used for the background color option in the function

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In PHP; what format is used for the background color option in the function imagerotate().

$color = "???????";
imagerotate($image, $degrees, $color);

I have tried:

$color = "#FFFFFF";
$color = "255255255";
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1 Answer

  1. Editorial Team

    I think you have to specify it with imagecolorallocate():

    // sets some colors
$white = imagecolorallocate($im, 255, 255, 255);
$black = imagecolorallocate($im, 0, 0, 0);

// hexadecimal way
$white = imagecolorallocate($im, 0xFF, 0xFF, 0xFF);
$black = imagecolorallocate($im, 0x00, 0x00, 0x00);

    via the man pages

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