<!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>Create a new ReadConcern</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="mongodb-driver-readconcern.bsonserialize.html">MongoDB\Driver\ReadConcern::bsonSerialize</a></div> <div class="next" style="text-align: right; float: right;"><a href="mongodb-driver-readconcern.getlevel.html">MongoDB\Driver\ReadConcern::getLevel</a></div> <div class="up"><a href="class.mongodb-driver-readconcern.html">MongoDB\Driver\ReadConcern</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="mongodb-driver-readconcern.construct" class="refentry"> <div class="refnamediv"> <h1 class="refname">MongoDB\Driver\ReadConcern::__construct</h1> <p class="verinfo">(mongodb >=1.0.0)</p><p class="refpurpose"><span class="refname">MongoDB\Driver\ReadConcern::__construct</span> — <span class="dc-title">Create a new ReadConcern</span></p> </div> <div class="refsect1 description" id="refsect1-mongodb-driver-readconcern.construct-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="modifier">final</span> <span class="modifier">public</span> <span class="methodname"><strong>MongoDB\Driver\ReadConcern::__construct</strong></span> ([ <span class="methodparam"><span class="type">string</span> <code class="parameter">$level</code></span> ] )</div> <p class="para rdfs-comment"> Constructs a new <a href="class.mongodb-driver-readconcern.html" class="classname">MongoDB\Driver\ReadConcern</a>, which is an immutable value object. </p> </div> <div class="refsect1 parameters" id="refsect1-mongodb-driver-readconcern.construct-parameters"> <h3 class="title">Parameters</h3> <dl> <dt> <code class="parameter">level</code></dt> <dd> <p class="para"> The <a href="https://docs.mongodb.com/manual/reference/read-concern/#read-concern-levels" class="link external">» read concern level</a>. You may use, but are not limited to, one of the <a href="class.mongodb-driver-readconcern.html#mongodb-driver-readconcern.constants" class="link">class constants</a>. </p> </dd> </dl> </div> <div class="refsect1 errors" id="refsect1-mongodb-driver-readconcern.construct-errors"> <h3 class="title">Errors/Exceptions</h3> <ul class="simplelist"> <li class="member">Throws <a href="class.mongodb-driver-exception-invalidargumentexception.html" class="classname">MongoDB\Driver\Exception\InvalidArgumentException</a> on argument parsing errors.</li> </ul> </div> <div class="refsect1 examples" id="refsect1-mongodb-driver-readconcern.construct-examples"> <h3 class="title">Examples</h3> <div class="example" id="example-1719"> <p><strong>Example #1 <span class="function"><strong>MongoDB\Driver\ReadConcern::__construct()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br /><br /></span><span style="color: #FF8000">/* Unspecified read isolation level (uses the server's default behavior) */<br /></span><span style="color: #0000BB">$rc </span><span style="color: #007700">= new </span><span style="color: #0000BB">MongoDB</span><span style="color: #007700">\</span><span style="color: #0000BB">Driver</span><span style="color: #007700">\</span><span style="color: #0000BB">ReadConcern</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">/* Request read isolation from a single replica set node */<br /></span><span style="color: #0000BB">$rc </span><span style="color: #007700">= new </span><span style="color: #0000BB">MongoDB</span><span style="color: #007700">\</span><span style="color: #0000BB">Driver</span><span style="color: #007700">\</span><span style="color: #0000BB">ReadConcern</span><span style="color: #007700">(</span><span style="color: #0000BB">MongoDB</span><span style="color: #007700">\</span><span style="color: #0000BB">Driver</span><span style="color: #007700">\</span><span style="color: #0000BB">ReadConcern</span><span style="color: #007700">::</span><span style="color: #0000BB">LOCAL</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Request read isolation from a majority of the replica set nodes */<br /></span><span style="color: #0000BB">$rc </span><span style="color: #007700">= new </span><span style="color: #0000BB">MongoDB</span><span style="color: #007700">\</span><span style="color: #0000BB">Driver</span><span style="color: #007700">\</span><span style="color: #0000BB">ReadConcern</span><span style="color: #007700">(</span><span style="color: #0000BB">MongoDB</span><span style="color: #007700">\</span><span style="color: #0000BB">Driver</span><span style="color: #007700">\</span><span style="color: #0000BB">ReadConcern</span><span style="color: #007700">::</span><span style="color: #0000BB">MAJORITY</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> </div> </div> <div class="refsect1 seealso" id="refsect1-mongodb-driver-readconcern.construct-seealso"> <h3 class="title">See Also</h3> <ul class="simplelist"> <li class="member"><a href="https://docs.mongodb.com/manual/reference/read-concern/" class="link external">» Read Concern reference</a></li> </ul> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="mongodb-driver-readconcern.bsonserialize.html">MongoDB\Driver\ReadConcern::bsonSerialize</a></div> <div class="next" style="text-align: right; float: right;"><a href="mongodb-driver-readconcern.getlevel.html">MongoDB\Driver\ReadConcern::getLevel</a></div> <div class="up"><a href="class.mongodb-driver-readconcern.html">MongoDB\Driver\ReadConcern</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>