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+--TEST--
+Test array_map() function : usage variations - with recursive callback
+--FILE--
+<?php
+/* Prototype : array array_map ( callback $callback , array $arr1 [, array $... ] )
+ * Description: Applies the callback to the elements of the given arrays
+ * Source code: ext/standard/array.c
+ */
+
+/*
+ * Test array_map() by passing subarrays and recursive callback function
+ */
+
+echo "*** Testing array_map() : recursive callback function ***\n";
+
+// callback function
+function square_recur_single_array($var) {
+ if (is_array($var))
+ return array_map('square_recur_single_array', $var);
+ return $var * $var;
+}
+
+$array1 = array(1, array(2, 3, array(5)), array(4));
+
+var_dump( array_map('square_recur_single_array', $array1));
+
+echo "Done";
+?>
+--EXPECTF--
+*** Testing array_map() : recursive callback function ***
+array(3) {
+ [0]=>
+ int(1)
+ [1]=>
+ array(3) {
+ [0]=>
+ int(4)
+ [1]=>
+ int(9)
+ [2]=>
+ array(1) {
+ [0]=>
+ int(25)
+ }
+ }
+ [2]=>
+ array(1) {
+ [0]=>
+ int(16)
+ }
+}
+Done