diff --git a/README.md b/README.md
index e12c4d5..eb0abd3 100644
--- a/README.md
+++ b/README.md
@@ -41,35 +41,36 @@ Include in your code and begin using the library:
 ```
 
 ## Usage
+Version 1.2.0 changed the naming convention from `snake_case` to `PascalCase`. The snake case variant of the below functions can still be used, but the compiler will issue a warning. Snake case variants will be removed in 2.0.0.
 
-### array_shift
+### ArrayShift
 ```pawn
-stock array_shift(array[], value, size = sizeof array)
+stock ArrayShift(array[], value, size = sizeof array)
 ```
 Appends `value` to the end of `array`. Pushes the first value off and returns it, moves everything down.
 
-### array_unshift
+### ArrayUnshift
 ```pawn
-stock array_unshift(array[], value, size = sizeof array)
+stock ArrayUnshift(array[], value, size = sizeof array)
 ```
 Inserts `value` at the start of `array`. Pushes the last value off and returns it, moves everything up.
 
-### array_sort
+### ArraySort
 ```pawn
-stock array_sort(arr[], left = 0, right = sizeof arr)
+stock ArraySort(array[], left = 0, right = sizeof array)
 ```
 Sorts `array` in ascending order. Implementation of the QuickSort algorithm. This function does not return any value.
 
-### in_array
+### InArray
 ```pawn
-stock bool:in_array(needle, const haystack[], &index = 0, size = sizeof haystack)
+stock bool:InArray(needle, const haystack[], &index = 0, size = sizeof haystack)
 ```
 Returns `true` if `needle` is in `haystack`, false otherwise. Using the `index` parameter, this function can be used in a while loop to find all instances of a certain value:
 
 ```pawn
 new index = -1;
 
-while(in_array(5, theArrayToSearch, index))
+while(InArray(5, theArrayToSearch, index))
 {
     printf("found 5 at index: %d", index);
 }
diff --git a/array_util.inc b/array_util.inc
index 9da8ef5..e8b2827 100644
--- a/array_util.inc
+++ b/array_util.inc
@@ -37,7 +37,7 @@
  * </param>
  * <returns>The value at the first index.</returns>
  */
-stock array_shift(array[], value, size = sizeof array)
+stock ArrayShift(array[], value, size = sizeof array)
 {
 	new returnval = array[0];
 	
@@ -50,6 +50,12 @@ stock array_shift(array[], value, size = sizeof array)
 	return returnval;
 }
 
+#pragma deprecated 2.0.0
+stock array_shift(array[], value, size = sizeof array)
+{
+	return ArrayShift(array, value, size);
+}
+
 /**
  * <summary>
  *  Inserts a value at the start of array. Pushes the last value off and returns 
@@ -63,7 +69,7 @@ stock array_shift(array[], value, size = sizeof array)
  * </param>
  * <returns>The value at size - 1.</return>
  */
-stock array_unshift(array[], value, size = sizeof array)
+stock ArrayUnshift(array[], value, size = sizeof array)
 {
 	new returnval = array[size - 1];
 	
@@ -76,6 +82,12 @@ stock array_unshift(array[], value, size = sizeof array)
 	return returnval;
 }
 
+#pragma deprecated 2.0.0
+stock array_unshift(array[], value, size = sizeof array)
+{
+	return ArrayUnshift(array, value, size);
+}
+
 /**
  * <summary>
  *  Checks if a value exists within an array.
@@ -86,7 +98,7 @@ stock array_unshift(array[], value, size = sizeof array)
  * <param name="size">Size of the array.</param>
  * <returns>true if found, false otherwise.</returns>
  */
-stock bool:in_array(needle, const haystack[], &index = 0, size = sizeof haystack)
+stock bool:InArray(needle, const haystack[], &index = 0, size = sizeof haystack)
 {	
 	while(index < size)
 	{
@@ -96,6 +108,12 @@ stock bool:in_array(needle, const haystack[], &index = 0, size = sizeof haystack
     return false;
 }
 
+#pragma deprecated 2.0.0
+stock bool:in_array(needle, const haystack[], &index = 0, size = sizeof haystack)
+{
+	return InArray(needle, haystack, index, size);
+}
+
 /**
  * <summary>
  *	Sorts array values in ascending order. Implementation of the QuickSort algorithm.
@@ -104,7 +122,7 @@ stock bool:in_array(needle, const haystack[], &index = 0, size = sizeof haystack
  * <param name="left">Index of the lower bound, should normally be 0.</param>
  * <param name="right">Index of the upper bound, should normally be the size of the array.</param>
  */
-stock array_sort(array[], left = 0, right = sizeof array)
+stock ArraySort(array[], left = 0, right = sizeof array)
 {
 	new
 		i = left,
@@ -130,10 +148,16 @@ stock array_sort(array[], left = 0, right = sizeof array)
 
 	// recursion
 	if (left < j)
-		array_sort(array, left, j);
+		ArraySort(array, left, j);
 
 	if (i < right)
-		array_sort(array, i, right);
+		ArraySort(array, i, right);
+}
+
+#pragma deprecated 2.0.0
+stock array_sort(array[], left = 0, right = sizeof array)
+{
+	ArraySort(array, left, right);
 }
 
 // -----------------------------------------------------------------------------
diff --git a/test.pwn b/test.pwn
index b603c16..dd6ebeb 100644
--- a/test.pwn
+++ b/test.pwn
@@ -3,82 +3,82 @@
 
 main()
 {
-    testShift();
-    testUnshift();
-    testInArray();
-    testSort();
+    TestShift();
+    TestUnshift();
+    TestInArray();
+    TestSort();
 }
 
-testShift()
+TestShift()
 {
-    printf("\narray_shift");
+    printf("\nArrayShift");
     printf("-----------");
 
     new arrayToShift[] = {1, 1, 2, 3, 5, 8, 13, 21, 34, 55};
 
     printf("before shifting:");
-    printArray(arrayToShift);
+    PrintArray(arrayToShift);
 
-    new firstValue = array_shift(arrayToShift, 89);
+    new firstValue = ArrayShift(arrayToShift, 89);
 
     printf("after shifting:");
-    printArray(arrayToShift);
+    PrintArray(arrayToShift);
     printf("value that was shifted off: %d", firstValue);
 }
 
-testUnshift()
+TestUnshift()
 {
-    printf("\narray_unshift");
+    printf("\nArrayUnshift");
     printf("-------------");
 
     new arrayToShift[] = {1, 1, 2, 3, 5, 8, 13, 21, 34, 55};
 
     printf("before shifting:");
-    printArray(arrayToShift);
+    PrintArray(arrayToShift);
 
-    new lastValue = array_unshift(arrayToShift, 89);
+    new lastValue = ArrayUnshift(arrayToShift, 89);
 
     printf("after shifting:");
-    printArray(arrayToShift);
+    PrintArray(arrayToShift);
     printf("value that was shifted off: %d", lastValue);
 }
 
-testInArray()
+TestInArray()
 {
-    printf("\nin_array");
+    printf("\nInArray");
     printf("--------");
 
     new testArray[] = {1, 3, 5, 7, 13, 5, 1, 7, 3};
 
     printf("array to search in:");
-    printArray(testArray);
+    PrintArray(testArray);
     printf("finding all the indexes that contain the number 5:");
 
     new index = -1;
 
-    while(in_array(5, testArray, index))
+    while(InArray(5, testArray, index))
     {
         printf("found 5 at index: %d", index);
     }
 }
 
-testSort()
+TestSort()
 {
-    printf("\narray_sort");
+    printf("\nArraySort");
     printf("----------");
 
     new arrayToSort[] = {13, 92, 85, 64, 17, 55, 33, 60, 58, 95};
 
     printf("before sort:");
-    printArray(arrayToSort);
+    PrintArray(arrayToSort);
 
-    array_sort(arrayToSort);
+    ArraySort(arrayToSort);
 
     printf("after sort:");
-    printArray(arrayToSort);
+    PrintArray(arrayToSort);
 }
 
-printArray(const arr[], size = sizeof arr)
+PrintArray(const arr[], size = sizeof arr)
 {
     new output[128];
 
@@ -96,4 +96,4 @@ printArray(const arr[], size = sizeof arr)
     }
 
     print(output);
-}
\ No newline at end of file
+}