PHP | imagecolorresolve() Function
Last Updated :
23 Aug, 2019
The imagecolorresolve() function is an inbuilt function in PHP which is used to get the index of the specified color or its closest possible alternative color. This function returns a color index value for a requested color, either the exact matched color or the closest possible alternative.
Syntax:
int imagecolorresolve ( $image, $red, $green, $blue )
Parameters: This function accepts four parameters as mentioned above and described below:
- $image: It is returned by one of the image creation functions, such as imagecreatetruecolor(). It is used to create size of image.
- $red: This parameter is used to set value of red color component.
- $green: This parameter is used to set value of green color component.
- $blue: This parameter is used to set value of blue color component.
Return Value: This function returns the color index.
Below programs illustrate the imagecolorresolve() function in PHP:
Program 1:
<?php
$image = imagecreatefromgif(
$colors = array();
$colors[] = imagecolorresolve($image, 167, 75, 55);
$colors[] = imagecolorresolve($image, 150, 25, 250);
$colors[] = imagecolorresolve($image, 161, 234, 135);
$colors[] = imagecolorresolve($image, 143, 255, 254);
print_r($colors);
imagedestroy($image);
?>
|
Output:
Array (
[0] => 187
[1] => 188
[2] => 189
[3] => 190
)
Program 2:
<?php
$image = imagecreatefrompng(
$colors = array(
imagecolorresolve($image, 156, 0, 255),
imagecolorresolve($image, 0, 255, 200),
imagecolorresolve($image, 16, 134, 35),
imagecolorresolve($image, 143, 255, 254)
);
print_r($colors);
imagedestroy($image);
?>
|
Output:
Array (
[0] => 10223871
[1] => 65480
[2] => 1082915
[3] => 9437182
)
Related Articles:
Reference: http://php.net/manual/en/function.imagecolorresolve.php
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