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How to generate non-repeating colors in php: 1. Create a PHP sample file; 2. Generate non-repeating colors through the "function randColor($num){...}" method.
The operating environment of this article: Windows7 system, PHP7.1 version, DELL G3 computer
How does php generate non-repeating colors?
php generates multiple random non-repeating color codes
The code is as follows:
<?php
function randColor($num){
//color value limits 0-16777215;
$prehash='#'; //using string '#' before the color value;
$rsArr= array();
for($i=0;$i<$num;$i++){
$color=rand(0,16777215);
$rsArr[$i]=$prehash.dechex($color);
}
return $rsArr;
}
print_r(randColor(20));
?>Just put the function that generates random numbers into the loop.
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