call to undefined function which is defined

["Bing Du" <bdu@xxxxxxxxxxx>]

Hi,

RHEL 4
PHP 4.3.9
Apache 2.0.52

Without knowing much about the web application we use, can anybody tell me
what kind of situation could trigger the following 'call to undefined
function' error?

PHP Fatal error:  Call to undefined function:  encryptchar
code() in /data/www/html/typo3_src/typo3/sysext/cms/tslib/class.tslib_fe.p
hp on line 3439

Line 3439 is:

$out .= $this->encryptCharcode($charValue,0x61,0x7A,$offset);

Here is the function block that has line 3439.

function encryptEmail($string,$back=0)  {
                $out = '';

                if ($this->spamProtectEmailAddresses === 'ascii') {
                        for ($a=0; $a<strlen($string); $a++) {
                                $out .= '&#'.ord(substr($string, $a, 1)).';';
                        }
                } else  {
                                // like str_rot13() but with a variable
offset and a wider character range
                        $len = strlen($string);
                        $offset =
intval($this->spamProtectEmailAddresses)*($back?-1:1);
                        for ($i=0; $i<$len; $i++)       {
                                $charValue = ord($string{$i});
                                if ($charValue >= 0x2B && $charValue <=
0x3A)   {       // 0-9 . , - + / :
                                        $out .=
$this->encryptCharcode($charValue,0x2B,0x3A,$offset);
                                } elseif ($charValue >= 0x40 && $charValue
<= 0x5A)     {       // A-Z @
                                        $out .=
$this->encryptCharcode($charValue,0x40,0x5A,$offset);
                                } else if ($charValue >= 0x61 &&
$charValue <= 0x7A)    {       // a-z
                                        $out .=
$this->encryptCharcode($charValue,0x61,0x7A,$offset);
                                } else {
                                        $out .= $string{$i};
                                }
                        }
                }
                return $out;
        }

And the encryptCharcode() function the fatal error complained about is
defined right before encrytEmail().

==
 function encryptCharcode($n,$start,$end,$offset)        {
                $n = $n + $offset;
                if ($offset > 0 && $n > $end)   {
                        $n = $start + ($n - $end - 1);
                } else if ($offset < 0 && $n < $start)  {
                        $n = $end - ($start - $n - 1);
                }
                return chr($n);
        }
==

I don't understand why the error is about a function that's defined fine??

Thanks in advance for any help,

Bing

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