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<title>Changed Functions</title>
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</div><hr /><div id="migration55.changed-functions" class="sect1">
<h2 class="title">Changed Functions</h2>
<div class="sect2" id="migration55.changed-functions.core">
<h3 class="title">PHP Core</h3>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.set-error-handler.html" class="function">set_error_handler()</a></span> can now be called with <strong><code>NULL</code></strong> as
an argument to reset the error handler.
</span>
</li>
<li class="listitem">
<span class="simpara">
When called with <strong><code>NULL</code></strong>, <span class="function"><a href="function.set-error-handler.html" class="function">set_error_handler()</a></span> and
<span class="function"><a href="function.set-exception-handler.html" class="function">set_exception_handler()</a></span> now return the previous error
or exception handler, respectively.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="function"><a href="function.json-encode.html" class="function">json_encode()</a></span> now accepts <em><code class="parameter">depth</code></em>
parameter.
</span>
</li>
<li class="listitem">
<span class="simpara">
The behaviour of <span class="function"><a href="function.pack.html" class="function">pack()</a></span> and
<span class="function"><a href="function.unpack.html" class="function">unpack()</a></span> with the "a" and "A" format codes has
changed.
<a href="migration55.incompatible.html#migration55.incompatible.pack" class="link">Detailed notes on these changes are available.</a>
</span>
</li>
</ul>
</div>
<div class="sect2" id="migration55.changed-functions.intl">
<h3 class="title"><a href="book.intl.html" class="link">intl</a></h3>
<ul class="itemizedlist">
<li class="listitem">
<span class="simpara">
<span class="methodname"><a href="messageformatter.format.html" class="methodname">MessageFormatter::format()</a></span> and related functions
now accept named arguments and mixed numeric and named arguments when PHP
is linked to ICU 4.8 or later.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="methodname"><a href="messageformatter.format.html" class="methodname">MessageFormatter::format()</a></span> and related functions
no longer error when an insufficient number of arguments have been
provided. Instead, the placeholders will not be substituted.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="methodname"><a href="messageformatter.format.html" class="methodname">MessageFormatter::format()</a></span> and
<span class="methodname"><a href="messageformatter.parse.html" class="methodname">MessageFormatter::parse()</a></span> are no longer limited to
second precision when dealing with times.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="methodname"><a href="intldateformatter.create.html" class="methodname">IntlDateFormatter::__construct()</a></span> and
<span class="function"><a href="intldateformatter.create.html" class="function">datefmt_create()</a></span> now accept
<a href="class.intltimezone.html" class="classname">IntlTimeZone</a> and
<a href="class.datetimezone.html" class="classname">DateTimeZone</a> objects for the
<em><code class="parameter">timezone</code></em> argument, and
<a href="class.intlcalendar.html" class="classname">IntlCalendar</a> objects for the
<em><code class="parameter">calendar</code></em> argument. Furthermore, if the time zone
is omitted and the <em><code class="parameter">calendar</code></em> doesn't specify a time
zone, PHP's default time zone from
<span class="function"><a href="function.date-default-timezone-get.html" class="function">date_default_timezone_get()</a></span> is now used instead of the
default ICU time zone.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="methodname"><a href="intldateformatter.getcalendar.html" class="methodname">IntlDateFormatter::getCalendar()</a></span> and
<span class="function"><a href="intldateformatter.getcalendar.html" class="function">datefmt_get_calendar()</a></span> return false if the
<a href="class.intldateformatter.html" class="classname">IntlDateFormatter</a> object was created with an
<a href="class.intlcalendar.html" class="classname">IntlCalendar</a> instance instead of one of the
<a href="class.intldateformatter.html" class="classname">IntlDateFormatter</a> constants.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="methodname"><a href="intldateformatter.setcalendar.html" class="methodname">IntlDateFormatter::setCalendar()</a></span> and
<span class="function"><a href="intldateformatter.setcalendar.html" class="function">datefmt_set_calendar()</a></span> now accept
<a href="class.intlcalendar.html" class="classname">IntlCalendar</a> objects in addition to the
<a href="class.intldateformatter.html" class="classname">IntlDateFormatter</a> constants.
</span>
</li>
<li class="listitem">
<span class="simpara">
<span class="methodname"><a href="intldateformatter.format.html" class="methodname">IntlDateFormatter::format()</a></span> and
<span class="function"><a href="intldateformatter.format.html" class="function">datefmt_format()</a></span> now accept
<a href="class.intlcalendar.html" class="classname">IntlCalendar</a> objects.
</span>
</li>
</ul>
</div>
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