Hex2Rgbp Custom Output Modifier Snippet

hex2rgba.php

<?php
# hex2rgba
# converts hex value from ColorPicker TV to rgba value
# NOTE that the ColorPicker TV must use the default output option
# based on function from http://mekshq.com/how-to-convert-hexadecimal-color-code-to-rgb-or-rgba-using-php/

if (!function_exists('hex2rgba')) {
	function hex2rgba($color, $opacity = false) {
 		$default = 'rgb(0,0,0)';
 
		//Return default if no color provided
		if(empty($color))
          	return $default; 
 
		//Sanitize $color if "#" is provided 
        	if ($color[0] == '#' ) {
        		$color = substr( $color, 1 );
        	}
 
        	//Check if color has 6 or 3 characters and get values
        	if (strlen($color) == 6) {
                	$hex = array( $color[0] . $color[1], $color[2] . $color[3], $color[4] . $color[5] );
        	} elseif ( strlen( $color ) == 3 ) {
                	$hex = array( $color[0] . $color[0], $color[1] . $color[1], $color[2] . $color[2] );
        	} else {
                	return $default;
        	}
 
        	//Convert hexadec to rgb
        	$rgb =  array_map('hexdec', $hex);
 
        	//Check if opacity is set(rgba or rgb)
        	if($opacity){
        		if(abs($opacity) > 1)
        			$opacity = 1.0;
        		$output = 'rgba('.implode(",",$rgb).','.$opacity.')';
        	} else {
        		$output = 'rgb('.implode(",",$rgb).')';
        	}
 
        	//Return rgb(a) color string
        	return $output;
	}

}

// get values from output modifier
$color = $input;
if ( true === isset($options) ) {
  $opacity = $options;
} else {
  $opacity = "0.0";
}

// run function
$rgba = hex2rgba($color, $opacity);

return $rgba;