samshal / equation-solver Goto Github PK

	foreach ($a as $elem)
	{
		$acoeff += $elem;
	}    

	foreach ($b as $elem)
	{
		$bcoeff += $elem;
	}    

	foreach ($c as $elem)
	{
		$ccoeff += $elem;
	}

	foreach ($a as $elem)
	{
		$acoeff += (double)$elem;
	}    

	foreach ($b as $elem)
	{
		$bcoeff += (double)$elem;
	}    

	foreach ($c as $elem)
	{
		$ccoeff += (double)$elem;
	}

        $lhs = explode("=", $this->equation)[0];
        $lhsSub = substr($lhs, 0, 1);
		if (is_numeric($lhsSub))
		{
			$lhs = "+".$lhs;
		}
		else if ($lhsSub != '+' && $lhsSub != '-')
		{
			$lhs = "+1".$lhs;
		}
		for ($i = 0, $j = strlen($lhs); $i < $j; $i++)
		{
			if (strstr("+-", $lhs[$i]))
			{
				//$pos = strpos($lhs, $lhs[$i]);
				//echo $i."<br/>";
				$positions[] = $i;
			}
		}