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Hello, I am trying to take the calculations of two variables to create a new data for a new variable. For example..... LRH_calcLevel($LRH_current, $LRH_bankfull); +/- $LRH_totalDepth = $newVar Which should translate to -10.43 Ft +/- 40 = $newVar (-29.57) <----- What I want Instead it is showing up as 10.43 Ft +/- 40 = $newVar (-50.43) <----- How it is displaying which is incorrect Here is the code I am using. The second function is what I am trying to use to create the new variable data based on the calculations above from the data provide via XML. How can I get this to display correctly? -Thanks //Parse Lake Ray Hubbard XML Data $site = simplexml_load_file($LRH_data);{ $LRH_bankfull = '435.5'; $LRH_totalDepth = '40'; $LRH_current = $site->observed->datum[0]->primary; $LRH_vaild = $site->observed->datum[0]->valid; $LRH_updated = DATE("D, M d, g:i a", STRTOTIME($LRH_vaild)); } //Lets calculate the lake depatures from full pool for Lake Ray Hubbard function LRH_calcLevel($LRH_current, $LRH_bankfull) { //Get float values from strings $LRH_current = floatval($LRH_current); $LRH_bankfull = floatval($LRH_bankfull); //Calculate the difference $LRH_calcLevel = $LRH_current - $LRH_bankfull; //Format difference to two decimal places and add 'Ft' $LRH_calcLevelStr = (string) number_format($LRH_calcLevel, 2) . ' Ft'; //If vlaue is positive add a + to beginning if($LRH_calcLevel>0) { $LRH_calcLevelStr = '+'.$LRH_calcLevelStr; } //Return the calculated formatted value return $LRH_calcLevelStr; } ////Lets calculate the lake percentage from full pool for Lake Ray Hubbard $val1 = $LRH_current; $val2 = $LRH_bankfull; $LRH_prec = ( $val1 / $val2) * 100; // 1 digit after the decimal point $LRH_prec = round($LRH_prec, 1); //Lets convert the depature from full pool for Lake Ray Hubbard function LRH_calcDepth($LRH_calcLevelStr, $LRH_totalDepth) { //Get float values from strings $LRH_calcDepthStr = floatval($LRH_calcLevelStr); $LRH_totalDepth = floatval($LRH_totalDepth); //Calculate the difference $LRH_calcDepth = $LRH_calcDepthStr - $LRH_totalDepth; //Format difference to two decimal places and add 'Ft' $LRH_calcDepthStr = (string) number_format($LRH_calcDepth, 2) . ' Ft'; //If vlaue is positive add a + to beginning if($LRH_calcDepth>0) { $LRH_calcDepthStr = '+'.$LRH_calcDepthStr; } //Return the calculated formatted value return $LRH_calcDepthStr; } ////Lets calculate the lake percentage from full pool for Lake Ray Hubbard $val1 = LRH_calcLevel($LRH_current, $LRH_bankfull); $val2 = $LRH_totalDepth;