Changed Functions

Several functions were given new, optional parameters in PHP 5.4:

PHP Core:

• Added the optional limit parameter to debug_backtrace() and debug_print_backtrace(), to limit the amount of stack frames returned.
• is_link() now works properly for symbolic links on Windows Vista or later. Earlier systems do not support symbolic links.
• parse_url() now recognizes the host when a scheme is omitted, and a leading component separator is present. As of PHP 5.4.7.

OpenSSL:

• Added a no padding option to the openssl_encrypt() and openssl_decrypt() functions.

Intl:

• idn_to_ascii() and idn_to_utf8() now take two extra parameters, one indicating the variant (IDNA 2003 or UTS #46) and another, passed by reference, to return details about the operation in case UTS #46 is chosen.

New Parameters

Several functions were given new, optional parameters in PHP 5.3:

PHP Core:

• clearstatcache() - Added clear_realpath_cache and filename.
• copy() - Added a stream context parameter, context.
• fgetcsv() - Added escape.
• ini_get_all() - Added details.
• nl2br() - Added is_xhtml.
• parse_ini_file() - Added scanner_mode.
• round() - Added mode.
• stream_context_create() - Added params.
• strstr() and stristr() - Added before_needle.

json:

• json_encode() - Added options.
• json_decode() - Added depth.

Streams:

• stream_select(), stream_set_blocking(), stream_set_timeout(), and stream_set_write_buffer() now work with user-space stream wrappers.

sybase_ct:

• sybase_connect() - Added new.

New method parameters in PHP 5.3.0:

PHP Core:

• Exception::__construct() - Added previous.

New Parameters

Some functions were given new, optional, parameters in PHP 5.2.x:

PHP Core:

• htmlentities() - added double_encode in PHP 5.2.3.
• htmlspecialchars() - added double_encode in PHP 5.2.3.
• base64_decode() - added strict
• setcookie() - added httponly
• setrawcookie() - added httponly
• session_set_cookie_params() - added httponly
• memory_get_usage() - added real_usage
• get_loaded_extensions() - added zend_extensions in PHP 5.2.4

curl:

• curl_multi_info_read() - added msgs_in_queue

datetime

• date() - added "u" (milliseconds) format character in PHP 5.2.2

imap:

• imap_open() - added n_retries
• imap_reopen() - added n_retries

mbstring:

• mb_strrpos() - added offset
  Warning

  The offset parameter was put in the position the encoding parameter used to be. Backward compatibility has been provided by allowing encoding to be specified as the third parameter. Using this backward compatibility mode is not recommended because it will be removed in a future release of PHP.

ming:

• SWFMovie::streamMP3() - added skip in PHP 5.2.1

openssl:

• openssl_verify() - added signature_algo

pgsql:

• pg_escape_bytea() - added connection
• pg_escape_string() - added connection

simplexml:

• SimpleXMLElement::__construct() - added is_prefix
• SimpleXMLElement::attributes() - added is_prefix
• SimpleXMLElement::children() - added is_prefix
• simplexml_load_file() - added is_prefix
• simplexml_load_string() - added is_prefix

spl:

• array iterator_to_array(Traversable it [, bool use_keys = true]) - added use_keys in PHP 5.2.1

xmlreader:

• XMLReader::open() - added encoding and options
• XMLReader::XML() - added encoding and options

XMLWriter:

• xmlwriter_write_element() - the content became optional in PHP 5.2.3
• xmlwriter_write_element_ns() - the content became optional in PHP 5.2.3