<!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>Sets the ISO date</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="datetime.setdate.html">DateTime::setDate</a></div> <div class="next" style="text-align: right; float: right;"><a href="datetime.settime.html">DateTime::setTime</a></div> <div class="up"><a href="class.datetime.html">DateTime</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="datetime.setisodate" class="refentry"> <div class="refnamediv"> <h1 class="refname">DateTime::setISODate</h1> <h1 class="refname">date_isodate_set</h1> <p class="verinfo">(PHP 5 >= 5.2.0)</p><p class="refpurpose"><span class="refname">DateTime::setISODate</span> -- <span class="refname">date_isodate_set</span> — <span class="dc-title">Sets the ISO date</span></p> </div> <div class="refsect1 description" id="refsect1-datetime.setisodate-description"> <h3 class="title">Description</h3> <p class="para">Object oriented style</p> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type"><a href="class.datetime.html" class="type DateTime">DateTime</a></span> <span class="methodname"><strong>DateTime::setISODate</strong></span> ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$year</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$week</code></span> [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$day</code><span class="initializer"> = 1</span></span> ] )</div> <p class="para rdfs-comment">Procedural style</p> <div class="methodsynopsis dc-description"> <span class="type"><a href="class.datetime.html" class="type DateTime">DateTime</a></span> <span class="methodname"><a href="function.date-isodate-set.html" class="methodname">date_isodate_set</a></span> ( <span class="methodparam"><span class="type"><a href="class.datetime.html" class="type DateTime">DateTime</a></span> <code class="parameter">$object</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$year</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$week</code></span> [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$day</code><span class="initializer"> = 1</span></span> ] )</div> <p class="para rdfs-comment"> Set a date according to the ISO 8601 standard - using weeks and day offsets rather than specific dates. </p> </div> <div class="refsect1 parameters" id="refsect1-datetime.setisodate-parameters"> <h3 class="title">Parameters</h3> <dl> <dt> <span class="term"><em><code class="parameter">object</code></em></span> <dd> <p class="para">Procedural style only: A <a href="class.datetime.html" class="classname">DateTime</a> object returned by <span class="function"><a href="function.date-create.html" class="function">date_create()</a></span>. The function modifies this object.</p></dd> </dt> <dt> <span class="term"><em><code class="parameter">year</code></em></span> <dd> <p class="para"> Year of the date. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">week</code></em></span> <dd> <p class="para"> Week of the date. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">day</code></em></span> <dd> <p class="para"> Offset from the first day of the week. </p> </dd> </dt> </dl> </div> <div class="refsect1 returnvalues" id="refsect1-datetime.setisodate-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the <a href="class.datetime.html" class="classname">DateTime</a> object for method chaining or <strong><code>FALSE</code></strong> on failure. </p> </div> <div class="refsect1 changelog" id="refsect1-datetime.setisodate-changelog"> <h3 class="title">Changelog</h3> <table class="doctable informaltable"> <thead> <tr> <th>Version</th> <th>Description</th> </tr> </thead> <tbody class="tbody"> <tr><td>5.3.0</td><td>Changed the return value on success from <strong><code>NULL</code></strong> to <a href="class.datetime.html" class="classname">DateTime</a>.</td></tr> </tbody> </table> </div> <div class="refsect1 examples" id="refsect1-datetime.setisodate-examples"> <h3 class="title">Examples</h3> <div class="example" id="example-2262"> <p><strong>Example #1 <span class="function"><strong>DateTime::setISODate()</strong></span> example</strong></p> <div class="example-contents"><p>Object oriented style</p></div> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />$date </span><span style="color: #007700">= new </span><span style="color: #0000BB">DateTime</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$date</span><span style="color: #007700">-></span><span style="color: #0000BB">setISODate</span><span style="color: #007700">(</span><span style="color: #0000BB">2008</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$date</span><span style="color: #007700">-></span><span style="color: #0000BB">format</span><span style="color: #007700">(</span><span style="color: #DD0000">'Y-m-d'</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$date</span><span style="color: #007700">-></span><span style="color: #0000BB">setISODate</span><span style="color: #007700">(</span><span style="color: #0000BB">2008</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #0000BB">7</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$date</span><span style="color: #007700">-></span><span style="color: #0000BB">format</span><span style="color: #007700">(</span><span style="color: #DD0000">'Y-m-d'</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> <div class="example-contents"><p>Procedural style</p></div> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />$date </span><span style="color: #007700">= </span><span style="color: #0000BB">date_create</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">date_isodate_set</span><span style="color: #007700">(</span><span style="color: #0000BB">$date</span><span style="color: #007700">, </span><span style="color: #0000BB">2008</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">date_format</span><span style="color: #007700">(</span><span style="color: #0000BB">$date</span><span style="color: #007700">, </span><span style="color: #DD0000">'Y-m-d'</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">date_isodate_set</span><span style="color: #007700">(</span><span style="color: #0000BB">$date</span><span style="color: #007700">, </span><span style="color: #0000BB">2008</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #0000BB">7</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">date_format</span><span style="color: #007700">(</span><span style="color: #0000BB">$date</span><span style="color: #007700">, </span><span style="color: #DD0000">'Y-m-d'</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> <div class="example-contents"><p>The above examples will output:</p></div> <div class="example-contents screen"> <div class="cdata"><pre> 2008-01-07 2008-01-13 </pre></div> </div> </div> <div class="example" id="example-2263"> <p><strong>Example #2 Values exceeding ranges are added to their parent values</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />$date </span><span style="color: #007700">= new </span><span style="color: #0000BB">DateTime</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$date</span><span style="color: #007700">-></span><span style="color: #0000BB">setISODate</span><span style="color: #007700">(</span><span style="color: #0000BB">2008</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #0000BB">7</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$date</span><span style="color: #007700">-></span><span style="color: #0000BB">format</span><span style="color: #007700">(</span><span style="color: #DD0000">'Y-m-d'</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$date</span><span style="color: #007700">-></span><span style="color: #0000BB">setISODate</span><span style="color: #007700">(</span><span style="color: #0000BB">2008</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #0000BB">8</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$date</span><span style="color: #007700">-></span><span style="color: #0000BB">format</span><span style="color: #007700">(</span><span style="color: #DD0000">'Y-m-d'</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$date</span><span style="color: #007700">-></span><span style="color: #0000BB">setISODate</span><span style="color: #007700">(</span><span style="color: #0000BB">2008</span><span style="color: #007700">, </span><span style="color: #0000BB">53</span><span style="color: #007700">, </span><span style="color: #0000BB">7</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$date</span><span style="color: #007700">-></span><span style="color: #0000BB">format</span><span style="color: #007700">(</span><span style="color: #DD0000">'Y-m-d'</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</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> 2008-01-13 2008-01-14 2009-01-04 </pre></div> </div> </div> <div class="example" id="example-2264"> <p><strong>Example #3 Finding the month a week is in</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />$date </span><span style="color: #007700">= new </span><span style="color: #0000BB">DateTime</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$date</span><span style="color: #007700">-></span><span style="color: #0000BB">setISODate</span><span style="color: #007700">(</span><span style="color: #0000BB">2008</span><span style="color: #007700">, </span><span style="color: #0000BB">14</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">$date</span><span style="color: #007700">-></span><span style="color: #0000BB">format</span><span style="color: #007700">(</span><span style="color: #DD0000">'n'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> <div class="example-contents"><p>The above examples will output:</p></div> <div class="example-contents screen"> <div class="cdata"><pre> 3 </pre></div> </div> </div> </div> <div class="refsect1 seealso" id="refsect1-datetime.setisodate-seealso"> <h3 class="title">See Also</h3> <ul class="simplelist"> <li class="member"> <span class="function"><a href="datetime.setdate.html" class="function" rel="rdfs-seeAlso">DateTime::setDate()</a> - Sets the date</span></li> <li class="member"> <span class="function"><a href="datetime.settime.html" class="function" rel="rdfs-seeAlso">DateTime::setTime()</a> - Sets the time</span></li> </ul> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a 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