diff --git a/generators/php/math.js b/generators/php/math.js
index 5100d0f4b..cef909281 100644
--- a/generators/php/math.js
+++ b/generators/php/math.js
@@ -372,3 +372,13 @@ Blockly.PHP['math_random_float'] = function(block) {
   // Random fraction between 0 and 1.
   return ['(float)rand()/(float)getrandmax()', Blockly.PHP.ORDER_FUNCTION_CALL];
 };
+
+Blockly.PHP['math_atan2'] = function(block) {
+  // Arctangent of point (X, Y) in degrees from -180 to 180.
+  var argument0 = Blockly.PHP.valueToCode(block, 'X',
+      Blockly.PHP.ORDER_COMMA) || '0';
+  var argument1 = Blockly.PHP.valueToCode(block, 'Y',
+      Blockly.PHP.ORDER_COMMA) || '0';
+  return ['atan2(' + argument1 + ', ' + argument0 + ') / pi() * 180',
+      Blockly.PHP.ORDER_DIVISION];
+};
\ No newline at end of file