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diff --git a/pjlib/include/pj/array.h b/pjlib/include/pj/array.h
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+++ b/pjlib/include/pj/array.h
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+/* $Header: /pjproject-0.3/pjlib/include/pj/array.h 7     10/14/05 12:25a Bennylp $ */
+#ifndef __PJ_ARRAY_H__
+#define __PJ_ARRAY_H__
+
+/**
+ * @file array.h
+ * @brief PJLIB Array helper.
+ */
+#include <pj/types.h>
+
+PJ_BEGIN_DECL
+
+/**
+ * @defgroup PJ_ARRAY Array helper.
+ * @ingroup PJ_DS
+ * @{
+ *
+ * This module provides helper to manipulate array of elements of any size.
+ * It provides most used array operations such as insert, erase, and search.
+ */
+
+/**
+ * Insert value to the array at the given position, and rearrange the
+ * remaining nodes after the position.
+ *
+ * @param array	    the array.
+ * @param elem_size the size of the individual element.
+ * @param count	    the current number of elements in the array.
+ * @param pos	    the position where the new element is put.
+ * @param value	    the value to copy to the new element.
+ */
+PJ_DECL(void) pj_array_insert( void *array,
+			       unsigned elem_size,
+			       unsigned count,
+			       unsigned pos,
+			       const void *value);
+
+/**
+ * Erase a value from the array at given position, and rearrange the remaining
+ * elements post the erased element.
+ *
+ * @param array	    the array.
+ * @param elem_size the size of the individual element.
+ * @param count	    the current number of elements in the array.
+ * @param pos	    the index/position to delete.
+ */
+PJ_DECL(void) pj_array_erase( void *array,
+			      unsigned elem_size,
+			      unsigned count,
+			      unsigned pos);
+
+/**
+ * Search the first value in the array according to matching function.
+ *
+ * @param array	    the array.
+ * @param elem_size the individual size of the element.
+ * @param count	    the number of elements.
+ * @param matching  the matching function, which MUST return PJ_SUCCESS if 
+ *		    the specified element match.
+ * @param result    the pointer to the value found.
+ *
+ * @return	    PJ_SUCCESS if value is found, otherwise the error code.
+ */
+PJ_DECL(pj_status_t) pj_array_find(   const void *array, 
+				      unsigned elem_size, 
+				      unsigned count, 
+				      pj_status_t (*matching)(const void *value),
+				      void **result);
+
+/**
+ * @}
+ */
+
+PJ_END_DECL
+
+
+#endif	/* __PJ_ARRAY_H__ */
+