<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Gets the default timezone used by all date/time functions in a script</title>
</head>
<body><div class="manualnavbar" style="text-align: center;">
<div class="prev" style="text-align: left; float: left;"><a href="function.date-date-set.html">date_date_set</a></div>
<div class="next" style="text-align: right; float: right;"><a href="function.date-default-timezone-set.html">date_default_timezone_set</a></div>
<div class="up"><a href="ref.datetime.html">Date/Time Functions</a></div>
<div class="home"><a href="index.html">PHP Manual</a></div>
</div><hr /><div id="function.date-default-timezone-get" class="refentry">
<div class="refnamediv">
<h1 class="refname">date_default_timezone_get</h1>
<p class="verinfo">(PHP 5 >= 5.1.0)</p><p class="refpurpose"><span class="refname">date_default_timezone_get</span> — <span class="dc-title">
Gets the default timezone used by all date/time functions in a script
</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.date-default-timezone-get-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><strong>date_default_timezone_get</strong></span>
( <span class="methodparam">void</span>
)</div>
<p class="para rdfs-comment">
In order of preference, this function returns the default timezone by:
<ul class="itemizedlist">
<li class="listitem">
<p class="para">
Reading the timezone set using the
<span class="function"><a href="function.date-default-timezone-set.html" class="function">date_default_timezone_set()</a></span> function (if any)
</p>
</li>
<li class="listitem">
<p class="para">
Prior to PHP 5.4.0 <em class="emphasis">only</em>: Reading the <var class="varname"><var class="varname">TZ</var></var>
environment variable (if non empty)
</p>
</li>
<li class="listitem">
<p class="para">
Reading the value of the <a href="datetime.configuration.html#ini.date.timezone" class="link">date.timezone</a> ini option
(if set)
</p>
</li>
<li class="listitem">
<p class="para">
Prior to PHP 5.4.0 <em class="emphasis">only</em>: Querying the host operating system (if supported
and allowed by the OS). This uses an algorithm
that has to <em class="emphasis">guess</em> the timezone. This is by no means going to work correctly for
every situation. A warning is shown when this stage is reached. Do not rely on it to be guessed
correctly, and set <a href="datetime.configuration.html#ini.date.timezone" class="link">date.timezone</a> to the correct timezone
instead.
</p>
</li>
</ul>
</p>
<p class="para">
If none of the above succeed, <span class="methodname"><strong>date_default_timezone_get()</strong></span>
will return a default timezone of <em>UTC</em>.
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.date-default-timezone-get-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns a <span class="type"><a href="language.types.string.html" class="type string">string</a></span>.
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.date-default-timezone-get-changelog">
<h3 class="title">Changelog</h3>
<p class="para">
<table class="doctable informaltable">
<thead>
<tr>
<th>Version</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>5.4.0</td>
<td>
The <em>TZ</em> environment variable is no longer used to
guess the timezone.
</td>
</tr>
<tr>
<td>5.4.0</td>
<td>
The timezone is no longer guessed from information available through the
operating system as the guessed timezone can not be relied on.
</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.date-default-timezone-get-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-2293">
<p><strong>Example #1 Getting the default timezone</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />date_default_timezone_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'Europe/London'</span><span style="color: #007700">);<br /><br />if (</span><span style="color: #0000BB">date_default_timezone_get</span><span style="color: #007700">()) {<br /> echo </span><span style="color: #DD0000">'date_default_timezone_set: ' </span><span style="color: #007700">. </span><span style="color: #0000BB">date_default_timezone_get</span><span style="color: #007700">() . </span><span style="color: #DD0000">'<br />'</span><span style="color: #007700">;<br />}<br /><br />if (</span><span style="color: #0000BB">ini_get</span><span style="color: #007700">(</span><span style="color: #DD0000">'date.timezone'</span><span style="color: #007700">)) {<br /> echo </span><span style="color: #DD0000">'date.timezone: ' </span><span style="color: #007700">. </span><span style="color: #0000BB">ini_get</span><span style="color: #007700">(</span><span style="color: #DD0000">'date.timezone'</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
date_default_timezone_set: Europe/London
date.timezone: Europe/London
</pre></div>
</div>
</div>
</p>
<p class="para">
<div class="example" id="example-2294">
<p><strong>Example #2 Getting the abbreviation of a timezone</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />date_default_timezone_set</span><span style="color: #007700">(</span><span style="color: #DD0000">'America/Los_Angeles'</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">date_default_timezone_get</span><span style="color: #007700">() . </span><span style="color: #DD0000">' => ' </span><span style="color: #007700">. </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'e'</span><span style="color: #007700">) . </span><span style="color: #DD0000">' => ' </span><span style="color: #007700">. </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'T'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
America/Los_Angeles => America/Los_Angeles => PST
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.date-default-timezone-get-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.date-default-timezone-set.html" class="function" rel="rdfs-seeAlso">date_default_timezone_set()</a> - Sets the default timezone used by all date/time functions in a script</span></li>
<li class="member"><a href="timezones.html" class="xref">List of Supported Timezones</a></li>
</ul>
</p>
</div>
</div><hr /><div class="manualnavbar" style="text-align: center;">
<div class="prev" style="text-align: left; float: left;"><a href="function.date-date-set.html">date_date_set</a></div>
<div class="next" style="text-align: right; float: right;"><a href="function.date-default-timezone-set.html">date_default_timezone_set</a></div>
<div class="up"><a href="ref.datetime.html">Date/Time Functions</a></div>
<div class="home"><a href="index.html">PHP Manual</a></div>
</div></body></html>
