1 files changed, 35 insertions, 0 deletions
diff --git a/include/php_compat/array_intersect_key.php b/include/php_compat/array_intersect_key.php
new file mode 100644
index 000000000..748b8f6f1
--- /dev/null
+++ b/include/php_compat/array_intersect_key.php
@@ -0,0 +1,35 @@
+<?php
+// http://www.php.net/manual/en/function.array-intersect-key.php
+// PHP 5 >= 5.1.0RC1
+function array_intersect_key()
+{
+  $args = func_get_args();
+  if (count($args) < 2) {
+      trigger_error('Wrong parameter count for array_intersect_key()', E_USER_WARNING);
+      return;
+  }
+
+  // Check arrays
+  $array_count = count($args);
+  for ($i = 0; $i !== $array_count; $i++) {
+      if (!is_array($args[$i])) {
+          trigger_error('array_intersect_key() Argument #' . ($i + 1) . ' is not an array', E_USER_WARNING);
+          return;
+      }
+  }
+
+  // Compare entries
+  $result = array();
+  foreach ($args[0] as $key1 => $value1) {
+      for ($i = 1; $i !== $array_count; $i++) {
+          foreach ($args[$i] as $key2 => $value2) {
+              if ((string) $key1 === (string) $key2) {
+                  $result[$key1] = $value1;
+              }
+          }
+      }
+  }
+
+  return $result;
+}
+?>
+\ No newline at end of file