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WIP of letter avatar generator:
- Use hash system to pick always the same color for given user
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@ -55,6 +55,7 @@ class avatar
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* array (
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* 'firstname' => [userFirstname],
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* 'lastname' => [userLastname],
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* 'id' => [user id]
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* )
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* @param array $_color = null an array of RGB color, default
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* is nul to get a random color from color library.
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@ -72,10 +73,11 @@ class avatar
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$firstname = isset($_content['firstname'])? $_content['firstname'] : '';
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//lastname
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$lastname = isset($_content['lastname'])? $_content['lastname'] : '';
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// id
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$id = isset($_content['id'])? $_content['id']: '';
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$bg_index = rand(0, count(self::$BG_COLORS));
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// Array of RGB color as background color
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$bgcolor = $_color ? $_color : self::$BG_COLORS[$bg_index];
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$bgcolor = $_color ? $_color : self::_getBgColor($firstname.$lastname.$id);
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// Letters to be shown
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$text = $firstname[0].$lastname[0];
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@ -116,4 +118,23 @@ class avatar
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imagedestroy($image);
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}
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}
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/**
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* Function to select a color code from background colors array
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* base on given string phrase. (FirstName LastName Id)
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*
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* @param string $_str string to convert to a color code
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*
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* @return string color code
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*/
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private static function _getBgColor ($_str)
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{
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$hash = 0;
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for ($i=0; $i< strlen($_str); $i++)
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{
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$hash = ord($_str[$i]) + $hash;
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}
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$index = $hash % count(self::$BG_COLORS);
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return self::$BG_COLORS[$index];
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}
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}
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