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POMore efficient way to set PHP variables over and over again
 

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    <p>I am curious of a better way of doing the code I have below, I find it repetitive and would like to cut down on it, any suggestions?</p> <p>I was trying to do something with Variable Variables but I failed at getting that to work.</p> <p>So basically I have a bunch of color names that I get with <code>$_GET[color-name-here']</code></p> <p>The goal is to set a color's code to a new color's code. So using the URL I am able to set the code for the color <code>red</code> to the color code of <code>green</code> so <code>red's value</code> would become <code>00FF00</code></p> <pre><code>// Get color and color replacement values from URL // get_value_or is ran through this code... // isset($_GET[$key]) &amp;&amp; !empty($_GET[$key]) ? $_GET[$key] : $default; $red = get_value_or('red', null); $orange = get_value_or('orange', null); $yellow = get_value_or('yellow', null); $green = get_value_or('green', null); $turquoise = get_value_or('turquise', null); $blue = get_value_or('blue', null); $purple = get_value_or('purple', null); $pink = get_value_or('pink', null); $white = get_value_or('white', null); // Define Default Color Name and Hexcode values $colorsArray = array( 'red' =&gt; 'FF0000', 'orange' =&gt; 'FF5000', 'yellow' =&gt; 'FFF200', 'green' =&gt; '00FF00', 'turquoise' =&gt; '00F0C8', 'blue' =&gt; '0064FF', 'purple' =&gt; '9F00FF', 'pink' =&gt; 'FF0082', 'white' =&gt; 'FFFFFF' ); // Iterate Color Array and Set New Color Values if they exist foreach($colorsArray as $colorName =&gt; $colorCode){ // Do something to set each color Name with a New color code, if that color name has a value set } // Right now I am doing it manually for each color name, all 9+ like this... //Set Reds NEW color value if(isset($red)){ $colorsArray['red'] = $colorsArray[$red]; } //Set oranges NEW color value if(isset($orange)){ $colorsArray['orange'] = $colorsArray[$orange]; } //Set yellows NEW color value if(isset($yellow)){ $colorsArray['yellow'] = $colorsArray[$yellow]; } </code></pre> <p>So any ideas how to set all the colors with less code?</p> <p>A color's code should ONLY be updated if that color has a NEW value set in the URL using $_GET variables</p> <p>PS) I wasn't sure of a good title for this question, feel free to change it if you have a better one, thanks</p>
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    1. USJasonDavis
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    1. COCould you use `eval` to do this? See http://php.net/manual/en/function.eval.php . "The code will be executed in the scope of the code calling eval(). Thus any variables defined or changed in the eval() call will remain visible after it terminates."
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      1. USFloris
    2. COPlease don't use `eval`, that is a very very bad idea.
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      1. USajshort
    3. COTake care to validate the user inputs from the `$_GET` variables.
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      1. USjor
 

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