<HTML ><HEAD ><TITLE >ctype_alpha</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="PHP Manual" HREF="index.html"><LINK REL="UP" TITLE="Character type functions" HREF="ref.ctype.html"><LINK REL="PREVIOUS" TITLE="ctype_alnum" HREF="function.ctype-alnum.html"><LINK REL="NEXT" TITLE="ctype_cntrl" HREF="function.ctype-cntrl.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=ISO-8859-1"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.ctype-alnum.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.ctype-cntrl.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.ctype-alpha" ></A >ctype_alpha</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN15531" ></A ><P > (PHP 4 >= 4.0.4)</P >ctype_alpha -- Check for alphabetic character(s)</DIV ><DIV CLASS="refsect1" ><A NAME="AEN15534" ></A ><H2 >Description</H2 >bool <B CLASS="methodname" >ctype_alpha</B > ( string text)<BR ></BR ><P > Returns <TT CLASS="constant" ><B >TRUE</B ></TT > if every character in <TT CLASS="parameter" ><I >text</I ></TT > is a letter from the current locale, <TT CLASS="constant" ><B >FALSE</B ></TT > otherwise. In the standard <TT CLASS="literal" >C</TT > locale letters are just <TT CLASS="literal" >[A-Za-z]</TT > and <B CLASS="function" >ctype_alpha()</B > is equivalent to <TT CLASS="literal" >(ctype_upper($text) || ctype_lower($text))</TT >, but other languages have letters that are considered neither upper nor lower case. </P ><P > See also <A HREF="function.ctype-upper.html" ><B CLASS="function" >ctype_upper()</B ></A >, <A HREF="function.ctype-lower.html" ><B CLASS="function" >ctype_lower()</B ></A >, and <A HREF="function.setlocale.html" ><B CLASS="function" >setlocale()</B ></A >. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.ctype-alnum.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.ctype-cntrl.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >ctype_alnum</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.ctype.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >ctype_cntrl</TD ></TR ></TABLE ></DIV ></BODY ></HTML >