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<h2 class="title">New Functions</h2>
<p class="simpara">
PHP 5.3 introduced some new functions:
</p>
<p class="simpara">PHP Core:</p>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.array-replace.html" class="function">array_replace()</a></span>
- Replaces elements from passed arrays into one array.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.array-replace-recursive.html" class="function">array_replace_recursive()</a></span>
- Recursively replaces elements from passed arrays into one array.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.class-alias.html" class="function">class_alias()</a></span>
- Creates an alias for a user defined class.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.forward-static-call.html" class="function">forward_static_call()</a></span>
- Call a user function from a method context.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.forward-static-call-array.html" class="function">forward_static_call_array()</a></span>
- Call a user function from a method context, with the arguments contained
in an array.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.gc-collect-cycles.html" class="function">gc_collect_cycles()</a></span>
- Forces collection of any existing garbage cycles.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.gc-disable.html" class="function">gc_disable()</a></span>
- Deactivates the circular reference collector.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.gc-enable.html" class="function">gc_enable()</a></span>
- Activates the circular reference collector.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.gc-enabled.html" class="function">gc_enabled()</a></span>
- Returns the status of the circular reference collector.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.get-called-class.html" class="function">get_called_class()</a></span>
- Return the name of the class a static method is called in.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.gethostname.html" class="function">gethostname()</a></span>
- Return the current host name for the local machine.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.header-remove.html" class="function">header_remove()</a></span>
- Removes an HTTP header previously set using the
<span class="function"><a href="function.header.html" class="function">header()</a></span> function.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.lcfirst.html" class="function">lcfirst()</a></span>
- Make a string's first character lowercase.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.parse-ini-string.html" class="function">parse_ini_string()</a></span>
- Parse a configuration string.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.quoted-printable-encode.html" class="function">quoted_printable_encode()</a></span>
- Convert an 8 bit string to a quoted-printable string.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.str-getcsv.html" class="function">str_getcsv()</a></span>
- Parse a CSV string into an array.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.stream-context-set-default.html" class="function">stream_context_set_default()</a></span>
- Set the default stream context.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.stream-supports-lock.html" class="function">stream_supports_lock()</a></span>
- Return <strong><code>TRUE</code></strong> if the stream supports locking.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.stream-context-get-params.html" class="function">stream_context_get_params()</a></span>
- Retrieve parameters from a stream context.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="streamwrapper.stream-cast.html" class="function">streamWrapper::stream_cast()</a></span>
- Retrieve the underlying stream resource.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="streamwrapper.stream-set-option.html" class="function">streamWrapper::stream_set_option()</a></span>
- Change stream options
</span>
</li>
</ul>
<p class="simpara"><a href="book.datetime.html" class="link">Date/Time</a>:</p>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.date-add.html" class="function">date_add()</a></span>
- Adds an amount of days, months, years, hours, minutes and seconds to a
<a href="class.datetime.html" class="classname">DateTime</a> object.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.date-create-from-format.html" class="function">date_create_from_format()</a></span>
- Returns a new <a href="class.datetime.html" class="classname">DateTime</a> object formatted according
to the given format.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.date-diff.html" class="function">date_diff()</a></span>
- Returns the difference between two <a href="class.datetime.html" class="classname">DateTime</a>
objects.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.date-get-last-errors.html" class="function">date_get_last_errors()</a></span>
- Returns the warnings and errors from the last date/time operation.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.date-parse-from-format.html" class="function">date_parse_from_format()</a></span>
- Get infoformation about a given date.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.date-sub.html" class="function">date_sub()</a></span>
- Subtracts an amount of days, months, years, hours, minutes and seconds
from a <a href="class.datetime.html" class="classname">DateTime</a> object.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.timezone-version-get.html" class="function">timezone_version_get()</a></span>
- Returns the version of the timezonedb.
</span>
</li>
</ul>
<p class="simpara"><a href="book.gmp.html" class="link">GMP</a>:</p>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.gmp-testbit.html" class="function">gmp_testbit()</a></span>
- Tests whether a bit is set.
</span>
</li>
</ul>
<p class="simpara"><a href="book.hash.html" class="link">Hash</a>:</p>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.hash-copy.html" class="function">hash_copy()</a></span>
- Copy hashing context.
</span>
</li>
</ul>
<p class="simpara"><a href="book.imap.html" class="link">IMAP</a>:</p>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.imap-gc.html" class="function">imap_gc()</a></span>
- Clears IMAP cache.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><strong>imap_utf8_to_mutf7()</strong></span>
- Encode a UTF-8 string to modified UTF-7.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><strong>imap_mutf7_to_utf8()</strong></span>
- Decode a modified UTF-7 string to UTF-8.
</span>
</li>
</ul>
<p class="simpara"><a href="book.json.html" class="link">JSON</a>:</p>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.json-last-error.html" class="function">json_last_error()</a></span>
- Returns the last JSON error that occurred.
</span>
</li>
</ul>
<p class="simpara"><a href="book.mysqli.html" class="link">MySQL Improved</a>:</p>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="mysqli-result.fetch-all.html" class="function">mysqli_fetch_all()</a></span>
- Fetches all result rows as an associative array, a numeric
array, or both.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="mysqli.get-connection-stats.html" class="function">mysqli_get_connection_stats()</a></span>
- Returns statistics about the client connection.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="mysqli.poll.html" class="function">mysqli_poll()</a></span>
- Poll connections.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="mysqli.reap-async-query.html" class="function">mysqli_reap_async_query()</a></span>
- Get result from async query.
</span>
</li>
</ul>
<p class="simpara"><a href="book.openssl.html" class="link">OpenSSL</a>:</p>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.openssl-random-pseudo-bytes.html" class="function">openssl_random_pseudo_bytes()</a></span>
- Returns a string of the given length specified, filled with pseudo-random
bytes.
</span>
</li>
</ul>
<p class="simpara"><a href="book.pcntl.html" class="link">PCNTL</a>:</p>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.pcntl-signal-dispatch.html" class="function">pcntl_signal_dispatch()</a></span>
- Calls signal handlers for pending signals.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.pcntl-sigprocmask.html" class="function">pcntl_sigprocmask()</a></span>
- Sets and retrieves blocked signals.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.pcntl-sigtimedwait.html" class="function">pcntl_sigtimedwait()</a></span>
- Wait for signals with a timeout.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.pcntl-sigwaitinfo.html" class="function">pcntl_sigwaitinfo()</a></span>
- Wait for signals.
</span>
</li>
</ul>
<p class="simpara"><a href="book.pcre.html" class="link">PCRE</a>:</p>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.preg-filter.html" class="function">preg_filter()</a></span>
- Perform a regular expression search and replace, returning only results
which matched the pattern.
</span>
</li>
</ul>
<p class="simpara"><a href="book.sem.html" class="link">Semaphore</a>:</p>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.msg-queue-exists.html" class="function">msg_queue_exists()</a></span>
- Check whether a message queue exists.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.shm-has-var.html" class="function">shm_has_var()</a></span>
- Checks whether a specific key exists inside a shared memory segment.
</span>
</li>
</ul>
<p class="simpara">
The following functions are now natively implemented, making them available
on all operating systems which can run PHP:
</p>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.acosh.html" class="function">acosh()</a></span>
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.asinh.html" class="function">asinh()</a></span>
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.atanh.html" class="function">atanh()</a></span>
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.expm1.html" class="function">expm1()</a></span>
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.log1p.html" class="function">log1p()</a></span>
</span>
</li>
</ul>
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