Is there a way to get the last error in php4

Question

PHP 5 has error_get_last. Is there any way to completely or at least partially replicate the same functionality in PHP4.3?

Chris Eberle · Accepted Answer · 2011-07-01T14:27:03.167

Ripped from the PHP manual (courtesy of php at joert dot net):

<?php
if( !function_exists('error_get_last') ) {
    set_error_handler(
        create_function(
            '$errno,$errstr,$errfile,$errline,$errcontext',
            '
                global $__error_get_last_retval__;
                $__error_get_last_retval__ = array(
                    \'type\'        => $errno,
                    \'message\'        => $errstr,
                    \'file\'        => $errfile,
                    \'line\'        => $errline
                );
                return false;
            '
        )
    );

    function error_get_last() {
        global $__error_get_last_retval__;
        if( !isset($__error_get_last_retval__) ) {
            return null;
        }
        return $__error_get_last_retval__;
    }
}
?>

Also interesting to learn about create_function from the answer. Looks kind of nasty. — Sam, Jul 03 '11 at 21:03

Senad Meškin · Answer 2 · 2011-07-01T14:21:41.467

0

Yes it is, but you will have to do some programming, you need to attach error handler

$er_handler = set_error_handler("myErrorHandler");

but before this you need to write your "myErrorHandler"

function myErrorHandler($errNumber, $errString, $errFile, $errLine)
{
  /*now add it to session so you can access it from anywhere, or if you have class with the static variable you can save it there */

 $_SESSION["Error.LastError"] = $errNumber . '<br>' . $errString . '<br>' . $errFile . '<br>' . $errLine;
  }

Now when error is occured you can get it by

if(isset($_SESSION["Error.LastError"]))
  $str = $_SESSION["Error.LastError"];

now to replicate your method you need to create function

function get_last_error()
{
$str = "";
if(isset($_SESSION["Error.LastError"]))
      $str = $_SESSION["Error.LastError"];
return $str;
}

edited Jul 01 '11 at 14:21

answered Jul 01 '11 at 14:16

Senad Meškin

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+1, I like the idea, but I don't think `error_get_last` persists between sessions (it's just within the context of the currently executing environment). Probably better just to store it in a global variable or something. – Chris Eberle Jul 01 '11 at 14:18
error_get_last doesn't exist in php 4.3.xx but this is the way to keep your last error while session exists. – Senad Meškin Jul 01 '11 at 14:19
I'm saying that the REAL `error_get_last` only applies to the current script. It doesn't last from one connection to the next. – Chris Eberle Jul 01 '11 at 14:21
jap, u are correct, but you can always set after session_start(); unset of Error.LastError so it will be valid only for same request. – Senad Meškin Jul 01 '11 at 14:23
See my answer, notice it's just using global variables. – Chris Eberle Jul 01 '11 at 14:26
global variables should be avoided in programming – Senad Meškin Jul 01 '11 at 14:30
not when they're appropriate. Besides, what on earth do you think `$_SESSION` is? Practice what you preach there, buddy. – Chris Eberle Jul 01 '11 at 14:31

Is there a way to get the last error in php4

2 Answers2