PHP 8.4.0 RC2 available for testing

imagecolorallocate

(PHP 4, PHP 5, PHP 7, PHP 8)

imagecolorallocateBir görüntü için bir renk ayırır

Açıklama

imagecolorallocate(
    GdImage $görüntü,
    int $kırmızı,
    int $yeşil,
    int $mavi
): int|false

Belirtilen renk bileşenleriyle oluşturulan renk için bir renk tanıtıcısı döndürür.

imagecolorallocate() işlevi görüntü'de bulunan her renk için ayrı ayrı çağırmalıdır.

Bilginize:

İlk imagecolorallocate() çağrısı, imagecreate() ile oluşturulmuş paletli görüntünün artalanını boyar.

Bağımsız Değişkenler

görüntü

imagecreatetruecolor() gibi bir görüntü oluşturma işlevinden dönen bir GdImage nesnesi.

kırmızı

Kırmızı bileşenin değeri.

yeşil

Yeşil bileşenin değeri.

mavi

Mavi bileşenin değeri.

Renk bileşenlerinin değerleri onluk tabanda 0-255 aralığında, onaltılık tabanda 0x00-0xFF aralığında belirtilebilir.

Dönen Değerler

Renk ayrılamamışsa false, aksi takdirde renk inidisi ile döner.

Uyarı

Bu işlev mantıksal false değeriyle dönebileceği gibi false olarak değerlendirilebilecek mantıksal olmayan bir değerle de dönebilir. Bu konuda daha fazla bilgi Mantıksal Değerler bölümünde bulunabilir. Bu işlevden dönen değeri sınamak için === işleci kullanılabilir.

Sürüm Bilgisi

Sürüm: Açıklama
8.0.0 görüntü bağımsız değişkeninde artık bir GdImage nesnesi aktarmak gerekiyor; evvelce resource türünde geçerli bir gd değeri gerekirdi.

Örnekler

Örnek 1 - imagecolorallocate() örneği

<?php

$im
= imagecreate(100, 100);

// Artalan rengi kırmızı olsun
$artalan = imagecolorallocate($im, 255, 0, 0);

// Bir kaç renk ayıralım
$beyaz = imagecolorallocate($im, 255, 255, 255);
$siyah = imagecolorallocate($im, 0, 0, 0);

// Onaltılık değerlerle
$beyaz = imagecolorallocate($im, 0xFF, 0xFF, 0xFF);
$siyah = imagecolorallocate($im, 0x00, 0x00, 0x00);

?>

Ayrıca Bakınız

add a note

User Contributed Notes 21 notes

up
22
jahservant 13 at gmail dot com
14 years ago
Note that you can only assign 255 colors to any image palette. If you try assigning more, imagecolorallocate() will fail.

If, for example, you are randomly allocating colors, it will be wise to check if you have used up all of the colors possible. You can use imagecolorclosest() to get the closest assigned color:
<?php
//assign random rgb values
$c1 = mt_rand(50,200); //r(ed)
$c2 = mt_rand(50,200); //g(reen)
$c3 = mt_rand(50,200); //b(lue)
//test if we have used up palette
if(imagecolorstotal($pic)>=255) {
//palette used up; pick closest assigned color
$color = imagecolorclosest($pic, $c1, $c2, $c3);
} else {
//palette NOT used up; assign new color
$color = imagecolorallocate($pic, $c1, $c2, $c3);
}
?>

Also, imagecolorallocate() will assign a new color EVERY time the function is called, even if the color already exists in the palette:
<?php
// [...]
imagecolorallocate($pic,125,125,125); //returns 5
imagecolorallocate($pic,125,125,125); //returns 6
imagecolorallocate($pic,125,125,125); //returns 7
// [...]
imagecolorallocate($pic,125,125,125); //returns 23
imagecolorallocate($pic,125,125,125); //returns 25
// [...]
// etc...
?>

So here, imagecolorexact() is useful:
<?php
//see if color already exists
$color = imagecolorexact($pic, $c1, $c2, $c3);
if(
$color==-1) {
//color does not exist; allocate a new one
$color = imagecolorallocate($pic, $c1, $c2, $c3);
}
?>

And, for nerdy-ness sake, we can put the two ideas together:
<?php
//assign random rgb values
$c1 = mt_rand(50,200); //r(ed)
$c2 = mt_rand(50,200); //g(reen)
$c3 = mt_rand(50,200); //b(lue)
//get color from palette
$color = imagecolorexact($pic, $c1, $c2, $c3);
if(
$color==-1) {
//color does not exist...
//test if we have used up palette
if(imagecolorstotal($pic)>=255) {
//palette used up; pick closest assigned color
$color = imagecolorclosest($pic, $c1, $c2, $c3);
} else {
//palette NOT used up; assign new color
$color = imagecolorallocate($pic, $c1, $c2, $c3);
}
}
?>

Or as a function:
<?php
function createcolor($pic,$c1,$c2,$c3) {
//get color from palette
$color = imagecolorexact($pic, $c1, $c2, $c3);
if(
$color==-1) {
//color does not exist...
//test if we have used up palette
if(imagecolorstotal($pic)>=255) {
//palette used up; pick closest assigned color
$color = imagecolorclosest($pic, $c1, $c2, $c3);
} else {
//palette NOT used up; assign new color
$color = imagecolorallocate($pic, $c1, $c2, $c3);
}
}
return
$color;
}

for(
$i=0; $i<1000; $i++) { //1000 because it is significantly greater than 255
//assign random rgb values
$c1 = mt_rand(50,200); //r(ed)
$c2 = mt_rand(50,200); //g(reen)
$c3 = mt_rand(50,200); //b(lue)
//generate the color
$color = createcolor($pic,$c1,$c2,$c3);
//do something with color...
}
?>
up
9
Ludo
16 years ago
When working on an existant GIF images, if the number of different colours has reached the limits of the GIF format, imagecolorallocate will not use to the colour you ask her within the parameters, she will apply black !

That's a problem when generating images "on-the-fly" with many manipulations, from a GIF image.
To go round the problem, you have to convert the GIF image into a PNG one, and then you can work on the PNG and everything will be ok.

For example :
<?php
// first, convert into a PNG image
$handle = imagecreatefromgif('my_image.gif');
imagepng($handle, 'my_image.png');
imagedestroy($handle);

// then, you can work on it
$handle = imagecreatefrompng('my_image.png');
/*
* work on the image
*/
imagegif($handle);
?>
up
4
William Barath
17 years ago
Lots of hsv2rgb commentary but no working example, so here's mine:

<?php // hsv2rgb example translated from ImageMagick C code
function hsv2rgb($h, $s, $v)
{
$s /= 256.0;
if (
$s == 0.0) return array($v,$v,$v);
$h /= (256.0 / 6.0);
$i = floor($h);
$f = $h - $i;
$p = (integer)($v * (1.0 - $s));
$q = (integer)($v * (1.0 - $s * $f));
$t = (integer)($v * (1.0 - $s * (1.0 - $f)));
switch(
$i) {
case
0: return array($v,$t,$p);
case
1: return array($q,$v,$p);
case
2: return array($p,$v,$t);
case
3: return array($p,$q,$v);
case
4: return array($t,$p,$v);
default: return array(
$v,$p,$q);
}
}

$image = ImageCreateTrueColor(256,128);
for (
$y=0; $y<64; $y++) for($x=0; $x<256; $x++){
list(
$r,$g,$b) = hsv2rgb($x | 7,255,($y*4) |7);
$color = ($r << 16 ) | ($g << 8) | $b;
imagesetpixel($image, $x, $y-4, $color);
}
for (
$y=64; $y<128; $y++) for($x=0; $x<256; $x++){
list(
$r,$g,$b) = hsv2rgb($x|7,((127-$y)*4)|7,255);
$color = ($r << 16) | ($g << 8) | $b;
imagesetpixel($image, $x, $y-4, $color);
}
for (
$y=120; $y<128; $y++) for($x=0; $x<256; $x++){
$color = (($x |7) << 16) | (($x |7) << 8) | ($x |7);
imagesetpixel($image, $x, $y, $color);
}
header("Content-Type: image/png");
imagepng($image);
?>
up
3
jernberg at fairytale dot se
20 years ago
this might help someone, how to allocate an color from an html color-definition:

<?php
$fg
= "#ff0080";

$red = 100;
$green = 100;
$blue = 100;
if(
eregi( "[#]?([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})", $fg, $ret ) )
{
$red = hexdec( $ret[1] );
$green = hexdec( $ret[2] );
$blue = hexdec( $ret[3] );
}

$text_color = ImageColorAllocate( $img1, $red, $green, $blue );
?>
up
1
andreoli dot carlo at libero dot it
19 years ago
hsl to RGB
(not yet optimized but it function)

<?php
function hslToRgb ($h, $s, $l) {
if (
$h>240 || $h<0) return array(0,0,0);
if (
$s>240 || $s<0) return array(0,0,0);
if (
$l>240 || $l<0) return array(0,0,0);
if (
$h<=40) {
$R=255;
$G=(int)($h/40*256);
$B=0;
}
elseif (
$h>40 && $h<=80) {
$R=(1-($h-40)/40)*256;
$G=255;
$B=0;
}
elseif (
$h>80 && $h<=120) {
$R=0;
$G=255;
$B=($h-80)/40*256;
}
elseif (
$h>120 && $h<=160) {
$R=0;
$G=(1-($h-120)/40)*256;
$B=255;
}
elseif (
$h>160 && $h<=200) {
$R=($h-160)/40*256;
$G=0;
$B=255;
}
elseif (
$h>200) {
$R=255;
$G=0;
$B=(1-($h-200)/40)*256;
}
$R=$R+(240-$s)/240*(128-$R);
$G=$G+(240-$s)/240*(128-$G);
$B=$B+(240-$s)/240*(128-$B);
if (
$l<120) {
$R=($R/120)*$l;
$G=($G/120)*$l;
$B=($B/120)*$l;
}
else {
$R=$l*((256-$R)/120)+2*$R-256;
$G=$l*((256-$G)/120)+2*$G-256;
$B=$l*((256-$B)/120)+2*$B-256;
}
if (
$R<0) $R=0;
if (
$R>255) $R=255;
if (
$G<0) $G=0;
if (
$G>255) $G=255;
if (
$B<0) $B=0;
if (
$B>255) $B=255;

return array((int)
$R,(int)$G,(int)$B);
}
?>
up
1
smoli at paranoya dot ch
20 years ago
Some of you maybe want to use HSV color model for drawing color selectors and circles:

<?php
function &colormap_hsv_to_rgb($h, $s, $v)
{
$ret = new stdClass();

if(
$s == 0)
{
$ret->r = $v;
$ret->g = $v;
$ret->b = $v;

return
$ret;
}
else
{
$h = floatval($h) / 255.0;
$s = floatval($s) / 255.0;
$v = floatval($v) / 255.0;

$hue = $h;

if(
$hue == 1.0)
$hue = 0.0;

$hue *= 6.0;

$i = intval($hue);
$f = $hue - floatval($i);
$w = $v * (1.0 - $s);
$q = $v * (1.0 - ($s * $f));
$t = $v * (1.0 - ($s * (1.0 - $f)));

switch(
$i)
{
case
0: $ret->r = $v; $ret->g = $t; $ret->b = $w; break;
case
1: $ret->r = $q; $ret->g = $v; $ret->b = $w; break;
case
2: $ret->r = $w; $ret->g = $v; $ret->b = $t; break;
case
3: $ret->r = $w; $ret->g = $q; $ret->b = $v; break;
case
4: $ret->r = $t; $ret->g = $w; $ret->b = $v; break;
case
5: $ret->r = $v; $ret->g = $w; $ret->b = $q; break;
}
}

$ret->r = intval($ret->r * 255.0);
$ret->g = intval($ret->g * 255.0);
$ret->b = intval($ret->b * 255.0);

return
$ret;
}
?>
up
3
SW
18 years ago
This works! A Black-Image with vertical centered white Aliased Arial-Text and same left and right margin - used for Menu-Buttons.

<?php

function createImgText ($string="", $fontsize=0, $marginX=0, $imgH=0 , $fontfile="", $imgColorHex="", $txtColorHex=""){
if(
$string!=""){
Header("Content-type: image/png");
//
$spacing = 0;
$line = array("linespacing" => $spacing);
$box = @imageftbbox($fontsize,0,$fontfile,$string,$line)
or die(
"ERROR");
$tw=$box[4]-$box[0]; //image width
$marginY = $imgH - (($imgH - $fontsize) / 2);
$imgWidth = $tw + (2*$marginX);
$im = ImageCreate($imgWidth, $imgH);
$int = hexdec($imgColorHex);
$arr = array("red" => 0xFF & ($int >> 0x10),
"green" => 0xFF & ($int >> 0x8),
"blue" => 0xFF & $int);
$black = ImageColorAllocate($im, $arr["red"], $arr["green"], $arr["blue"]);
$int = hexdec($txtColorHex);
$arr = array("red" => 0xFF & ($int >> 0x10),
"green" => 0xFF & ($int >> 0x8),
"blue" => 0xFF & $int);
$white = ImageColorAllocate($im, $arr["red"], $arr["green"], $arr["blue"]);
ImageFtText($im, $fontsize, 0, $marginX, $marginY, $white, $fontfile, $string, array());
ImagePng($im);
ImageDestroy($im);
}else{
echo
"ERROR!";
}
}
createImgText ("Hello World", 9, 10, 18, "arial.ttf", "000000", "FFFFFF");
?>
up
1
picklecj at rose-hulman dot edu
17 years ago
Another solution to color limitation issues when creating gradients. This file takes width (px) and left and right colors (hex) and makes a gradient while only allocating 250 colors.

<?php
$leftR
= hexdec(substr($_GET["left"],0,2));
$leftG = hexdec(substr($_GET["left"],2,2));
$leftB = hexdec(substr($_GET["left"],4,2));
$rightR = hexdec(substr($_GET["right"],0,2));
$rightG = hexdec(substr($_GET["right"],2,2));
$rightB = hexdec(substr($_GET["right"],4,2));
$image=imagecreate($_GET["width"],1);
for(
$i=0;$i<250;$i++) {
$colorset[$i] = imagecolorallocate($image, $leftR + ($i*(($rightR-$leftR)/250)), $leftG + ($i*(($rightG-$leftG)/250)), $leftB + ($i*(($rightB-$leftB)/250)));
}
for(
$i=0;$i<($_GET["width"]);$i++) {
imagesetpixel ($image, $i, 0, $colorset[(int)($i/($_GET["width"]/250))] );
}
header("Content-type: image/png");
imagepng($image);
imagedestroy($image);
?>

example: gradient.php?width=640&left=000000&right=FF0000

Makes a 640px-wide image that fades from black to red.
up
1
tyberis
19 years ago
2 functions to convert from HSV colorspace (hue/saturation/brightness) to RGB (red/green/blue) colorspace and back.
<?php
// $c = array($red, $green, $blue)
// $red=[0..1], $green=[0..1], $blue=[0..1];
function rgb2hsv($c) {
list(
$r,$g,$b)=$c;
$v=max($r,$g,$b);
$t=min($r,$g,$b);
$s=($v==0)?0:($v-$t)/$v;
if (
$s==0)
$h=-1;
else {
$a=$v-$t;
$cr=($v-$r)/$a;
$cg=($v-$g)/$a;
$cb=($v-$b)/$a;
$h=($r==$v)?$cb-$cg:(($g==$v)?2+$cr-$cb:(($b==$v)?$h=4+$cg-$cr:0));
$h=60*$h;
$h=($h<0)?$h+360:$h;
}
return array(
$h,$s,$v);
}

// $c = array($hue, $saturation, $brightness)
// $hue=[0..360], $saturation=[0..1], $brightness=[0..1]
function hsv2rgb($c) {
list(
$h,$s,$v)=$c;
if (
$s==0)
return array(
$v,$v,$v);
else {
$h=($h%=360)/60;
$i=floor($h);
$f=$h-$i;
$q[0]=$q[1]=$v*(1-$s);
$q[2]=$v*(1-$s*(1-$f));
$q[3]=$q[4]=$v;
$q[5]=$v*(1-$s*$f);
//return(array($q[($i+4)%5],$q[($i+2)%5],$q[$i%5]));
return(array($q[($i+4)%6],$q[($i+2)%6],$q[$i%6])); //[1]
}
}
?>

[1] - EDITOR NOTE: THIS IS A FIX FROM "hc at hob(removethis)soft dot net".
up
1
chris at drunkenpirates dot co dot uk
21 years ago
<?php

/*
An example combining the use of ImageColorAllocate, Imagesetpixel, Imagecopyresized and some basic Trig
*/

Header("Content-type: image/png");

$height = 128;
$width = 128;

$imA = ImageCreate($width, $height);
$imB = ImageCreate($width*4, $height*4);
$bckA = ImageColorAllocate($imA, 0,0,0);
$bckB = ImageColorAllocate($imB, 0,0,0);

//GENERATE GRAY SCALE PALLETE

for($c=0;$c<256;$c++){
ImageColorAllocate($imA, $c, $c, $c);
}

//PRODUCE DATA

$m=rand(0,10);
for(
$c=0;$c<128;$c++){
$s= (sin( deg2rad($c*360*$m/128) )+1)*127;
$col_arr[$c]=$s;
}
for(
$y=0;$y<$height;$y++){
for(
$x=0;$x<$width;$x++){
$imgA[$x][$y]=$col_arr[$x];
}
}
for(
$y=0;$y<$height;$y++){
for(
$x=0;$x<$width;$x++){
$imgB[$x][$y]=$col_arr[$y];
}
}

//SET PIXELS

for($y=0;$y<$height;$y++){
for(
$x=0;$x<$width;$x++){
$imgC[$x][$y]=$imgA[$x][$y]+$imgB[$x][$y];
$s=$imgC[$x][$y]/2;
Imagesetpixel($imA,$x,$y,$s);
}
}

//RESIZE IMAGE FOR DISPLAY

Imagecopyresized ($imB, $imA, 0, 0, 0, 0, $width*4, $height*4, $width, $width);
ImagePNG($imB);
?>
up
1
bisqwit at iki dot fi
22 years ago
Actually, you can't allocate more than 256 colours for an paletted image (ImageCreate).
Use ImageCreateTrueColor instead. For it to work, you need libgd version 2 support in php though.
up
1
behun at webconsult dot sk
18 years ago
Also, when you need more then 256 colors, use imagecreatetruecolor function. With this function you can use unlimited number of colors.
up
1
aaron at parecki dot com
19 years ago
This will let you tint an image to any specific color. The blacks of the source image become your specified color, and the whites remain white. Works best for colorizing greyscale images.

<?php

$r
= 224;
$g = 192;
$b = 0;
$source_file = "picture.jpg";

$im_src = ImageCreateFromJpeg($source_file);
$im_tint = ImageCreate(imagesx($im_src),imagesy($im_src));
for (
$c = 0; $c < 255; $c++) {
ImageColorAllocate($im_tint, max($r,$c), max($g,$c), max($b,$c));
}
ImageCopyMerge($im_tint,$im_src,0,0,0,0, imagesx($im_src), imagesy($im_src), 100);
ImageDestroy($im_src);

header("Content-type: image/jpeg");
imagejpeg($im_tint);

?>
up
1
phillip dot gooch at gmail dot com
13 years ago
If you even in a situation where it's not allocating the color you want it could be because of your images color allocation table. GIF and 8-bit PNG images are very susceptible to this.

If your using an GIF and PNG try dropping a color from the table, should let you allocate another.
up
2
mlse
18 years ago
Another more general variation on the theme using the same naming conventions as the hexdec and dechex built-in functions ...

Prototype:

array hexrgb ( string hex_string )

Returns:

An associative array of the RGB components specified in hex_string.

hexrgb() example:

<?php
$rgb
= hexrgb("0xAABBCC");
print_r($rgb);
?>

Output is:

Array
(
[red] => 170
[green] => 187
[blue] => 204
)

Implementation:

<?php
function hexrgb ($hexstr)
{
$int = hexdec($hexstr);

return array(
"red" => 0xFF & ($int >> 0x10),
"green" => 0xFF & ($int >> 0x8),
"blue" => 0xFF & $int);
}
?>

The output of hexdec can then be passed to imagecolorallocate and manipulated as required.
up
2
mail at kailashnadh dot name
19 years ago
This nifty function will produce the negative of a given image!

<?php

/********************************

Code by Kailash Nadh
http://kailashnadh.name

usage:
img2neg("my_pic.jpg");

*********************************/

function img2neg($pic) {

header("Content-type: image/jpeg");

$source=imagecreatefromjpeg($pic); // Source
$width=imagesx($source); $height=imagesy($source);

$im = imagecreatetruecolor($width, $height); // Our negative img in the making

for($y=0; $y < $height; $y++) {
for(
$x=0; $x < $width; $x++) {

$colors=imagecolorsforindex($source, imagecolorat($source, $x,$y));

// this is what makes the colors negative
$r=255-$colors['red'];
$g=255-$colors['green'];
$b=255-$colors['blue'];
$test=imagecolorallocate($im, $r,$g,$b);
imagesetpixel($im,$x, $y, $test);
}
}

imagejpeg($im);
imagedestroy($im);
}

?>
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2
mv at brazil dot com
19 years ago
<?php

/**
* Create a image bar using lib GD
* Ege. <img src="color_sample.php?color=FF0000" width="10 height="30">
*/

// Split the HTML color representation
$hexcolor = str_split($_GET["color"], 2);

// Convert HEX values to DECIMAL
$bincolor[0] = hexdec("0x{$hexcolor[0]}");
$bincolor[1] = hexdec("0x{$hexcolor[1]}");
$bincolor[2] = hexdec("0x{$hexcolor[2]}");

$im = ImageCreate(100, 100);
$colorallocate = ImageColorAllocate($im, $bincolor[0], $bincolor[1], $bincolor[2]);
ImageFilledRectangle($im, 0, 0, 100, 100, $colorallocate);
header('Content-Type: image/png');
ImagePNG($im);

?>
up
0
Zigbigidorlu at hotmail dot com
19 years ago
Here's a very simple and very effective code to change a HEX color to RGB.

<?php
function HEX2RGB($color){
$color_array = array();
$hex_color = strtoupper($color);
for(
$i = 0; $i < 6; $i++){
$hex = substr($hex_color,$i,1);
switch(
$hex){
case
"A": $num = 10; break;
case
"B": $num = 11; break;
case
"C": $num = 12; break;
case
"D": $num = 13; break;
case
"E": $num = 14; break;
case
"F": $num = 15; break;
default:
$num = $hex; break;
}
array_push($color_array,$num);
}
$R = (($color_array[0] * 16) + $color_array[1]);
$G = (($color_array[2] * 16) + $color_array[3]);
$B = (($color_array[4] * 16) + $color_array[5]);
return array(
$R,$G,$B);
unset(
$color_array,$hex,$R,$G,$B);
}
?>
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0
Anonymous
19 years ago
When you are using truecolor images, you can also use bitwise operations to generate the color:
<?php
$color
= ($r << 16) | ($g << 8) | $b; // 2261213
?>
This is identical to the imagecolorallocate() function, in truecolor images!
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-1
leif at harmsen dot net
21 years ago
I was unable to get any of the posted methods for converting colour to grayscale to work. The problem appears to be the way gd creates images from jpeg inconsistently over various versions. Eventually I wrote my own that works for me - this approach allocates the 256 color pallete first. You can also play with separate $r, $g, $b variables before using imagecolorallocate in order to tone or tint the image.

<?php
$resource
= 'whatever.jpg';
$im_size = GetImageSize($resource);
$imageWidth = $im_size[0];
$imageHeight = $im_size[1];
$im = imageCreate($imageWidth,$imageHeight);
for (
$c = 0; $c < 256; $c++) {
ImageColorAllocate($im, $c,$c,$c);
}
$im2 = ImageCreateFromJpeg($resource);
ImageCopyMerge($im,$im2,0,0,0,0, $imageWidth, $imageHeight, 100);
ImageDestroy($im2);
?>

go on using $im as your image, it is now grayscale ....
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-3
divinity76 at gmail dot com
8 years ago
you have VERY limited space for color indexes (255 indexes on my system, with over 10 GB ram available, cli, no memory limit), when there is no more indexes available, imagecolorallocate will return false. when you create 2x indexes with the same r/g/b, you waste this very limited space. the function below should never fail, AND never waste any color index space. if there's already an index with the rgb, it will return the existing index, else it will try allocate 1, in the event that allocation fail (presumably because all index space is used up already), it will return the closest match to what you requested, and warn you via $couldFindExact.

function myimagecolorallocate($gd,int $red,int $green,int $blue,bool &$couldFindExact=null):int{
$ret=imagecolorexact($gd, $red, $green, $blue);
if($ret===-1){
$ret=imagecolorallocate($gd, $red, $green, $blue);
if($ret===false){
$couldFindExact=false;//out of color indexes (255 index by default..wish i knew why)
$ret=imagecolorclosest($gd, $red, $green, $blue);
} else {
$couldFindExact=true;
}
} else {
$couldFindExact=true;
}
return $ret;
}
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