dba-exists.xml

<?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>Vérifie qu'une clé DBA existe</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>bool</type><methodname>dba_exists</methodname>
   <methodparam><type class="union"><type>string</type><type>array</type></type><parameter>key</parameter></methodparam>
   <methodparam><type>resource</type><parameter>dba</parameter></methodparam>
  </methodsynopsis>
  <para>
   <function>dba_exists</function> vérifie si la clé
   <parameter>key</parameter> existe dans la base identifiée
   par <parameter>handle</parameter>.
  </para>
 </refsect1>
 
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>key</parameter></term>
     <listitem>
      <para>
       La clé à vérifier.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>dba</parameter></term>
     <listitem>
      <para>
       Le gestionnaire de base de données, retourné par la fonction
       <function>dba_open</function> ou la fonction
       <function>dba_popen</function>.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Retourne &true; si la clé existe, &false; sinon.
  </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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