php-doc-en/reference/ctype/reference.xml

<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.3 $ -->
 <reference id="ref.ctype">
  <title>Character type functions</title>
  <titleabbrev>ctype</titleabbrev>

  <partintro>
   <section id="ctype.intro">
    &reftitle.intro;
    <para>
     The functions provided by this extension check whether a character
     or string falls into a certain character class according to the
     current locale (see also <function>setlocale</function>). 
    </para>
    <para>
     When called with an integer argument these functions 
     behave exactly like their C counterparts from "ctype.h".
    </para>
    <para>
     When called with a string argument they will check
     every character in the string and will only return
     &true; if every character in the string matches the
     requested criteria.
    </para>
    <para>
     Passing anything else but a string or integer will 
     return &false; immediately.
    </para>
   </section>
   
   <section id="ctype.requirements">
    &reftitle.required;
    <para>
     None besides functions from the standard C library which are
     always available.
    </para>
   </section>
    
   <section id="ctype.installation">
    &reftitle.install;
    <para>
     Beginning with PHP 4.2.0 these functions are enabled by default.
     For older versions you have to configure and compile PHP 
     with <option role="configure">--enable-ctype</option>.
    </para>
   </section>

   <section id="ctype.configuration">
    &reftitle.runtime;
    &no.config;
   </section>

   <section id="ctype.resources">
    &reftitle.resources;
    &no.resource;
   </section>

   <section id="ctype.constants">
    &reftitle.constants;
    &no.constants;
   </section>
   
  </partintro>

&reference.ctype.functions;

 </reference>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"../../../manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->