Question

How to create dynamic color list for charts

Basically i have a different value in my database or each values contain each percentage and i need to show this percentages in pie chart with different colors ….

This is the example code of pie chart in static way

<color value="#99CDFB"/>
<color value="#3366FB"/>
<color value="#0000FA"/>
<color value="#F8CC00"/>
<color value="#F89900"/>
<color value="#F76600"/>

but i need dynamic way using PHP ( for loop / foreach loop) like this

$color = "";
foreach($data as $data){
   echo '<color value=".$color."/>';
}

and i don’t know to create dynamic color list also see the screenshot for verification

Answer 1

For random string of colors, here:

function randColor( $numColors ) {
    $chars = "ABCDEF0123456789";   
    $size = strlen( $chars );
    $str = array();
    for( $i = 0; $i < $numColors; $i++ ) {
        for( $j = 0; $j < 6; $j++ ) {
            $str[$i] .= $chars[ rand( 0, $size - 1 ) ];
        }
    }
    return $str;
}

Then, in your function, use $colors = randColor( 6 ); to create a total of 6 different colors. After that, here’s your output color method.

foreach( $colors as $codeColor ) {
    echo "<color value=\"#{$codeColor}\" />\n";
}