Sophie: php-manual-en-4.3.0-2mdk noarch

php-manual-en-4.3.0-2mdk.noarch.rpm

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>Character type functions</TITLE
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>XVI. Character type functions</H1
><DIV
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><A
NAME="AEN15473"
></A
><DIV
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><H1
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><A
NAME="ctype.intro"
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>Introduction</H1
><P
>&#13;     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 <A
HREF="function.setlocale.html"
><B
CLASS="function"
>setlocale()</B
></A
>). 
    </P
><P
>&#13;     When called with an integer argument these functions 
     behave exactly like their C counterparts from
     <TT
CLASS="filename"
>ctype.h</TT
>.
    </P
><P
>&#13;     When called with a string argument they will check
     every character in the string and will only return
     <TT
CLASS="constant"
><B
>TRUE</B
></TT
> if every character in the string matches the
     requested criteria. When called with an empty string 
     the result will always be <TT
CLASS="constant"
><B
>TRUE</B
></TT
>.
    </P
><P
>&#13;     Passing anything else but a string or integer will
     return <TT
CLASS="constant"
><B
>FALSE</B
></TT
> immediately.
    </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="ctype.requirements"
></A
>Requirements</H1
><P
>&#13;     None besides functions from the standard C library which are
     always available.
    </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="ctype.installation"
></A
>Installation</H1
><P
>&#13;  Beginning with PHP 4.2.0 these functions are enabled by default.
  For older versions you have to configure and compile PHP with
  <TT
CLASS="option"
>--enable-ctype</TT
>. You can disable
  ctype support with <TT
CLASS="option"
>--disable-ctype</TT
>.
 </P
><P
> The windows version of <TT
CLASS="literal"
>PHP</TT
>
has built in support for this extension. You do not need to load any additional
extension in order to use these functions.</P
><DIV
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><BLOCKQUOTE
CLASS="note"
><P
><B
>Note: </B
>
   Builtin support for ctype is available with PHP 4.3.0.
  </P
></BLOCKQUOTE
></DIV
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CLASS="section"
><H1
CLASS="section"
><A
NAME="ctype.configuration"
></A
>Runtime Configuration</H1
><P
>This extension has no configuration directives defined in <TT
CLASS="filename"
>php.ini</TT
>.</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="ctype.resources"
></A
>Resource Types</H1
><P
>This extension has no resource types defined.</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="ctype.constants"
></A
>Predefined Constants</H1
><P
>This extension has no constants defined.</P
></DIV
></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
><A
HREF="function.ctype-alnum.html"
>ctype_alnum</A
>&nbsp;--&nbsp;Check for alphanumeric character(s)</DT
><DT
><A
HREF="function.ctype-alpha.html"
>ctype_alpha</A
>&nbsp;--&nbsp;Check for alphabetic character(s)</DT
><DT
><A
HREF="function.ctype-cntrl.html"
>ctype_cntrl</A
>&nbsp;--&nbsp;Check for control character(s)</DT
><DT
><A
HREF="function.ctype-digit.html"
>ctype_digit</A
>&nbsp;--&nbsp;Check for numeric character(s)</DT
><DT
><A
HREF="function.ctype-graph.html"
>ctype_graph</A
>&nbsp;--&nbsp;Check for any printable character(s) except space</DT
><DT
><A
HREF="function.ctype-lower.html"
>ctype_lower</A
>&nbsp;--&nbsp;Check for lowercase character(s)</DT
><DT
><A
HREF="function.ctype-print.html"
>ctype_print</A
>&nbsp;--&nbsp;Check for printable character(s)</DT
><DT
><A
HREF="function.ctype-punct.html"
>ctype_punct</A
>&nbsp;--&nbsp;
     Check for any printable character which is not whitespace or an
     alphanumeric character
    </DT
><DT
><A
HREF="function.ctype-space.html"
>ctype_space</A
>&nbsp;--&nbsp;Check for whitespace character(s)</DT
><DT
><A
HREF="function.ctype-upper.html"
>ctype_upper</A
>&nbsp;--&nbsp;Check for uppercase character(s)</DT
><DT
><A
HREF="function.ctype-xdigit.html"
>ctype_xdigit</A
>&nbsp;--&nbsp;
     Check for character(s) representing a hexadecimal digit
    </DT
></DL
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