New Parameters
New Methods
Migrating from PHP 5.1.x to PHP 5.2.x
PHP Manual

## New Functions

PHP 5.2.x introduced some new functions:

PHP Core:

- array_fill_keys() - Create an array using the elements of the first parameter as keys, each initialized to val
- error_get_last() - Get the last occurred error as associative array. Returns `NULL` if there hasn't been an error yet
- image_type_to_extension() - Get file extension for image-type returned by getimagesize(), exif_read_data(), exif_thumbnail(), exif_imagetype()
- memory_get_peak_usage() - Returns the peak allocated by PHP memory
- sys_get_temp_dir() - Returns directory path used for temporary files. (Added in 5.2.1)
- timezone_abbreviations_list() - Returns associative array containing DST, offset and the timezone name
- timezone_identifiers_list() - Returns numerically indexed array with all timezone identifiers
- timezone_name_from_abbr() - Returns the timezone name from abbreviation
- stream_socket_shutdown() - Causes all or part of a full-duplex connection on the socket associated with stream to be shut down. As of PHP 5.2.1.

Image:

- imagegrabscreen() - Grabs a screenshot of the whole screen. As of PHP 5.2.2.
- imagegrabwindow() - Captures a window. As of PHP 5.2.2.

mbstring:

- mb_stripos() - Finds position of first occurrence of a string within another, case insensitive
- mb_stristr() - Finds first occurrence of a string within another, case insensitive
- mb_strrchr() - Finds the last occurrence of a character in a string within another
- mb_strrichr() - Finds the last occurrence of a character in a string within another, case insensitive
- mb_strripos() - Finds position of last occurrence of a string within another, case insensitive
- mb_strstr() - Finds first occurrence of a string within another

ming (As of PHP 5.2.1):

- void ming_setSWFCompression(int num) - Sets output compression
- void swfmovie::namedanchor(string name) - Creates anchor
- void swfmovie::protect([string password]) - Protects

openssl:

- openssl_csr_get_public_key() - Extracts public key from a CERT and prepares it for use
- openssl_csr_get_subject() - Returns the subject of a CERT
- openssl_pkey_get_details() - Returns an array with the key details (bits, pkey, type)

spl:

- spl_object_hash() - Return hash id for given object
- int iterator_apply(Traversable it, mixed function [, mixed params]) - Calls a function for every element in an iterator

pcre:

- preg_last_error() - Returns the error code of the last regex execution

pgsql:

- pg_field_table() - Returns the name of the table field belongs to, or table's oid if oid_only is `TRUE`

posix:

- posix_initgroups() - Calculate the group access list for the user specified in name

gmp:

- gmp_nextprime() - Finds next prime number

xmlwriter:

- xmlwriter_full_end_element() - End current element - returns `FALSE` on error
- xmlwriter_write_raw() - Write text - returns `FALSE` on error
- xmlwriter_start_dtd_entity() - Create start DTD Entity - returns `FALSE` on error
- xmlwriter_end_dtd_entity() - End current DTD Entity - returns `FALSE` on error
- xmlwriter_write_dtd_entity() - Write full DTD Entity tag - returns `FALSE` on error

New Parameters
New Methods
Migrating from PHP 5.1.x to PHP 5.2.x
PHP Manual