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php-doc-ru/reference/dba/functions/dba-exists.xml
Andrey Gromov b78d3df9cb 15 new
git-svn-id: https://svn.php.net/repository/phpdoc/ru/trunk@340439 c90b9560-bf6c-de11-be94-00142212c4b1
2016-10-11 18:56:42 +00:00

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<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.dba-exists" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>dba_exists</refname>
<refpurpose>Проверяет, существует ли ключ</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>dba_exists</methodname>
<methodparam><type>string</type><parameter>key</parameter></methodparam>
<methodparam><type>resource</type><parameter>handle</parameter></methodparam>
</methodsynopsis>
<para>
<function>dba_exists</function> проверяет, если в базе данных заданный ключ
<parameter>key</parameter>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>key</parameter></term>
<listitem>
<para>
Проверяемый ключ.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>handle</parameter></term>
<listitem>
<para>
Обработчик базы данных, возвращенный <function>dba_open</function> или
<function>dba_popen</function>.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Возвращает &true; если ключ существует и &false; в обратном случае.
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>dba_delete</function></member>
<member><function>dba_fetch</function></member>
<member><function>dba_insert</function></member>
<member><function>dba_replace</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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