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Other changes

• SplFileInfo::getpathinfo() now returns information about the path name.
• SplObjectStorage now has ArrayAccess support. It is now also possible to store associative information with objects in SplObjectStorage.
• In the GD extension, there is now pixelation support available through the imagefilter() function.
• var_dump() output now includes private object properties.
• session_start() now returns FALSE when session startup fails.
• property_exists() now checks the existence of a property independent of accessibility (like method_exists()).
• Stream wrappers can now be used by include_path.
• The initial parameter for array_reduce() can now be of any type.
• The directory functions opendir(), scandir(), and dir() now use the default stream context if no explicit context is passed.
• crypt() now has Blowfish and extended DES support, and crypt() features are now 100% portable. PHP has its own internal crypt implementation which drops into place when support for crypt or crypt_r is not found.
• getopt() now accepts "long options" on all platforms. Optional values and = as a separator for short options are now supported.
• fopen() has a new mode option (n), which passes O_NONBLOCK to the underlying open() system call. Note that this mode is not currently supported on Windows.
• getimagesize() now supports icon files (.ico).
• The mhash extension have moved to PECL, but the Hash extension have been modified to support mhash if PHP is compiled with --with-mhash. Note that the Hash extension does not require the mhash library to be available whether or not the mhash emulation is enabled.