udm_crc32(3) php man page | unix.com

UDM_CRC32(3)								 1							      UDM_CRC32(3)

udm_crc32 - Return CRC32 checksum of given string

SYNOPSIS
       int udm_crc32 (resource	$agent, string	$str)

DESCRIPTION
       Warning

	      This function is currently not documented; only its argument list is available.

PHP Documentation Group 													      UDM_CRC32(3)