Data commit

Task/Middle-three-digits/PHP/middle-three-digits.php

@@ -0,0 +1,39 @@
+// 32-bit builds of PHP: Integers can be from -2147483648 to 2147483647
+// 64-bit builds of PHP: Integers can be from -9223372036854775808 to 9223372036854775807
+
+function middlethree($integer)
+{
+	$int 	= (int)str_replace('-','',$integer);
+	$length = strlen($int);
+
+	if(is_int($int))
+	{
+		if($length >= 3)
+		{
+			if($length % 2 == 1)
+			{
+				$middle = floor($length / 2) - 1;
+				return substr($int,$middle, 3);
+			}
+			else
+			{
+				return 'The value must contain an odd amount of digits...';	
+			}
+		}
+		else
+		{
+			return 'The value must contain at least three digits...';	
+		}
+	}
+	else
+	{
+		return 'The value does not appear to be an integer...';
+	}
+}
+
+$numbers = array(123, 12345, 1234567, 987654321, 10001, -10001, -123, -100, 100, -12345, 1, 2, -1, -10, 2002, -2002, 0);
+
+foreach($numbers as $nums)
+{
+	echo $nums.' : '.middlethree($nums). '<br>';
+}