get-defined-constants.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- EN-Revision: n/a Maintainer: darvina Status: ready -->
<!-- splitted from ./en/functions/info.xml, last change in rev 1.71 -->
  <refentry xml:id="function.get-defined-constants" xmlns="http://docbook.org/ns/docbook">
   <refnamediv>
    <refname>get_defined_constants</refname>
    <refpurpose>
     Restituisve un array associativo con i nomi di tutte le costanti
     ed i loro valori
    </refpurpose>
   </refnamediv>
   <refsect1>
    <title>Descrizione</title>
     <methodsynopsis>
      <type>array</type><methodname>get_defined_constants</methodname>
      <void/>
     </methodsynopsis>
    <para>
     Questa funzione restituisce i nomi ed i valori di tutte le costanti
     attualmente definite. Queste includono sia quelle create dalle estensioni
     sia quelle create con la funzione 
     <function>define</function>.
    </para>
    <para>
     Ad esempio la linea seguente:
     <informalexample>
      <programlisting role="php">
<![CDATA[
<?php
print_r(get_defined_constants());
?>
]]>
      </programlisting>
      <para>
       visualizzerà il seguente elenco:
      </para>
      <screen>
<![CDATA[
Array
(
    [E_ERROR] => 1
    [E_WARNING] => 2
    [E_PARSE] => 4
    [E_NOTICE] => 8
    [E_CORE_ERROR] => 16
    [E_CORE_WARNING] => 32
    [E_COMPILE_ERROR] => 64
    [E_COMPILE_WARNING] => 128
    [E_USER_ERROR] => 256
    [E_USER_WARNING] => 512
    [E_USER_NOTICE] => 1024
    [E_ALL] => 2047
    [TRUE] => 1
)
]]>
      </screen>
     </informalexample>
    </para>
    <para>
     Vedere anche:
     <function>defined</function>,
     <function>get_loaded_extensions</function>,
     <function>get_defined_functions</function> e
     <function>get_defined_vars</function>.
    </para>
   </refsect1>
  </refentry>

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