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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 330300 $ -->
<refentry xml:id="mongocollection.remove" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>MongoCollection::remove</refname>
<refpurpose>Remove records from this collection</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier> <type>bool|array</type><methodname>MongoCollection::remove</methodname>
<methodparam choice="opt"><type>array</type><parameter>criteria</parameter><initializer>array()</initializer></methodparam>
<methodparam choice="opt"><type>array</type><parameter>options</parameter><initializer>array()</initializer></methodparam>
</methodsynopsis>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term>
<parameter>criteria</parameter>
</term>
<listitem>
<para>
Description of records to remove.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<parameter>options</parameter>
</term>
<listitem>
<para>
Options for remove.
<itemizedlist>
&mongo.writes.parameters.writeconcern;
<listitem>
<para>
<literal>"justOne"</literal>
</para>
<para>
Remove at most one record matching this criteria.
</para>
</listitem>
&mongo.writes.parameters.fsync;
&mongo.writes.parameters.journal;
<!--
&mongo.writes.parameters.sockettimeoutms;
-->
&mongo.writes.parameters.writeconcern;
&mongo.writes.parameters.writeconcerntimeout;
&mongo.writes.parameters.safe;
&mongo.writes.parameters.timeout;
</itemizedlist>
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns an array containing the status of the removal if the
<literal>"w"</literal> option is set. Otherwise, returns &true;.
</para>
<para>
Fields in the status array are described in the documentation for
<function>MongoCollection::insert</function>.
</para>
</refsect1>
<refsect1 role="errors">
&reftitle.errors;
&mongo.errors.exceptions.writeconcern;
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<!--
<row>
<entry>1.5.0</entry>
<entry>Renamed the <literal>"timeout"</literal> option to
<literal>"socketTimeoutMS"</literal>.</entry>
</row>
-->
<row>
<entry>1.3.0</entry>
<entry>
The <parameter>options</parameter> parameter no longer accepts a boolean
to signify <literal>"justOne"</literal>. Instead, this now has to be
done with <literal>array('justOne' => true)</literal>.
</entry>
</row>
<row>
<entry>1.2.11</entry>
<entry>
Emits <constant>E_DEPRECATED</constant> when
<parameter>options</parameter> is <type>scalar</type>.
</entry>
</row>
<row>
<entry>1.2.0</entry>
<entry>Added <literal>"timeout"</literal> option.</entry>
</row>
<row>
<entry>1.0.11</entry>
<entry>
Disconnects on "not master" errors if <literal>"safe"</literal> is set.
</entry>
</row>
<row>
<entry>1.0.9</entry>
<entry>
<para>
Added ability to pass integers to the <literal>"safe"</literal> option,
which previously only accepted booleans.
</para>
<para>
Added <literal>"fsync"</literal> option.
</para>
<para>
The return type was changed to be an array containing error information
if the <literal>"safe"</literal> option is used. Otherwise, a boolean
is returned as before.
</para>
</entry>
</row>
<row>
<entry>1.0.5</entry>
<entry>
Changed second parameter to be an array of options. Pre-1.0.5, the
second parameter was a boolean indicating the <literal>"safe"</literal>
option.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title><function>MongoCollection::remove</function> with justOne example</title>
<programlisting role="php">
<![CDATA[
<?php
$radioactive = $db->radioactive;
// count how much more plutonium there is
$remaining = $radioactive->count(array('type' => 94));
$halflife = $remaining/2;
// remove half of it
while ($halflife > 0) {
$radioactive->remove(array('type' => 94), array("justOne" => true));
$halflife--;
}
?>
]]>
</programlisting>
</example>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<simplelist>
<member><function>MongoCollection::insert</function></member>
<member><function>MongoCollection::update</function></member>
<member>MongoDB core docs on <link xlink:href="&url.mongodb.dochub.remove;">remove</link>.</member>
</simplelist>
</refsect1>
</refentry>
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