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Groups > comp.lang.php > #6334

Using count() as an array index

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I am using PHP version 4.2.3.  This is old,
but I cannot upgrade.

I came across a strange limitation which is
puzzling me.  The following test program:

<?php
//  This PHP file tests the use of count() as an array index
     $anArray[1] = "This is element one";
     $anArray[2] = "This is element two";
     $anArray[3] = "This is the last element";
//
     echo "$anArray[count($anArray)]\n";
?>

produces the error message:
Parse error: parse error, unexpected T_ENCAPSED_AND_WHITESPACE, 
expecting ']' in CountTest.php on line 7

Why is using count() as an array index not
allowed?

This is no big deal as the work around is
trivial; just replace the last line with:

     $lastIndex = count($anArray);
     echo "$anArray[$lastIndex]\n";

However, it is puzzling.

Many thanks,
Martin
-- 
Regards,
Martin Leese
E-mail: please@see.Web.for.e-mail.INVALID
Web: http://members.tripod.com/martin_leese/

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Using count() as an array index Martin Leese <please@see.Web.for.e-mail.INVALID> - 2012-06-15 12:51 -0600
  Re: Using count() as an array index Gregor Kofler <usenet@gregorkofler.com> - 2012-06-15 21:04 +0200
  Re: Using count() as an array index Denis McMahon <denismfmcmahon@gmail.com> - 2012-06-15 21:38 +0000
  Re: Using count() as an array index Chuck Anderson <cycletourist@invalid.invalid> - 2012-06-15 15:44 -0600
    Re: Using count() as an array index Martin Leese <please@see.Web.for.e-mail.INVALID> - 2012-06-16 11:56 -0600
      Re: Using count() as an array index Jerry Stuckle <jstucklex@attglobal.net> - 2012-06-16 14:44 -0400
        Re: Using count() as an array index Scott Johnson <noonehome@chalupasworld.com> - 2012-06-16 14:43 -0700
        Re: Using count() as an array index Martin Leese <please@see.Web.for.e-mail.INVALID> - 2012-06-17 07:57 -0600
          Re: Using count() as an array index Jerry Stuckle <jstucklex@attglobal.net> - 2012-06-17 10:27 -0400
            Re: Using count() as an array index Martin Leese <please@see.Web.for.e-mail.INVALID> - 2012-06-18 08:46 -0600
              Re: Using count() as an array index Jerry Stuckle <jstucklex@attglobal.net> - 2012-06-18 13:38 -0400
                Re: Using count() as an array index Martin Leese <please@see.Web.for.e-mail.INVALID> - 2012-06-19 09:03 -0600
                Re: Using count() as an array index Jerry Stuckle <jstucklex@attglobal.net> - 2012-06-19 11:27 -0400
        Re: Using count() as an array index Arno Welzel <usenet@arnowelzel.de> - 2012-06-18 09:46 +0200
          Re: Using count() as an array index Norman Peelman <npeelmandog@cfl.rr.com> - 2012-06-18 06:32 -0400
            Re: Using count() as an array index The Natural Philosopher <tnp@invalid.invalid> - 2012-06-18 12:24 +0100
            Re: Using count() as an array index Arno Welzel <usenet@arnowelzel.de> - 2012-06-18 19:43 +0200
              Re: Using count() as an array index "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2012-06-19 09:31 +0200
          Re: Using count() as an array index Jerry Stuckle <jstucklex@attglobal.net> - 2012-06-18 08:43 -0400
        Re: Using count() as an array index Christoph Becker <cmbecker69@gmx.de> - 2012-06-19 13:24 +0200
          Re: Using count() as an array index Jerry Stuckle <jstucklex@attglobal.net> - 2012-06-19 07:39 -0400
            Re: Using count() as an array index Christoph Becker <cmbecker69@gmx.de> - 2012-06-19 15:04 +0200
          Re: Using count() as an array index Martin Leese <please@see.Web.for.e-mail.INVALID> - 2012-06-19 09:14 -0600

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