Need count Help

[darklight]

I'm trying to make it so it counts up by 1 when you enter the page.  I'm just learning PHP so it's kinda hard lol.

 

<?
function do_count($tra) {
$tra = 0;
$tra++;

}

do_count($tra);
return ($tra);
?>

 

help?

[Barand]

Firstly, the return needs to be at the end of the function

<?
function do_count($tra) {
//     $tra = 0;                      //remove, otherwise the function always returns 1
       $tra++;
       return ($tra);
}


$tra = 1;
echo do_count($tra);              // need to do something with returned result, such as echo it.

?>

[MadTechie]

in addition to Barand corrections i think its important to point out that for a counter (like a site counter) your need to store the data somewhere ie file/database

 

as your starting i would suggest a file

heres a very basic read and write (i'll leave you to workout how to join them up)

 

fwrite

fread

[darklight]

Firstly, the return needs to be at the end of the function

<?
function do_count($tra) {
//     $tra = 0;                      //remove, otherwise the function always returns 1
       $tra++;
       return ($tra);
}


$tra = 1;
echo do_count($tra);              // need to do something with returned result, such as echo it.

?>

 

Seems to stop at 2  ???

[MadTechie]

it works but you need to store the old value

 

to prove it works try

 

<?php
function do_count($tra) {
//     $tra = 0;                      //remove, otherwise the function always returns 1
       $tra++;
       return ($tra);
}


$tra = 1;
echo do_count($tra);              // need to do something with returned result, such as echo it.
echo "<br>";
echo do_count($tra);
echo "<br>";
echo do_count($tra);
echo "<br>";
echo do_count($tra);
echo "<br>";
?>

 

Barand's posting i'll leave him to it

[Barand]

See MadTechies addendum.

 

You need to store $tra somewhere, as he said. Retrieve the value, increment it, re-store it for next time.

[MadTechie]

OK heres a quick one (for testing)

 

in other words this will last as long as a session, a kinda bad example but you've just started to learn PHP

see my first post for adding a file.

 

<?php
session_start();

function do_count($tra) {
//     $tra = 0;                      //remove, otherwise the function always returns 1
       $tra++;
       return ($tra);
}
if(isset($_SESSION['counter']))
{
$tra = $_SESSION['counter'];
}else{
$tra = 1;
}

echo do_count($tra);              // need to do something with returned result, such as echo it.
?>

 

[Barand]

or try a file-based version.

 

Look up the functions in the manual to see what they do

 

<?php
if (file_exists('tra.txt')) {
    $tra = file_get_contents('tra.txt');
}
else $tra = 0;

$tra++;

$fh = fopen('tra.txt', 'w');  // save new value
fwrite($fh, $tra);
fclose ($fh);

echo $tra;

?>

[Barand]

@MadTechie

 

Saving the new value ???

[darklight]

It always echos 2 lol

[Barand]

I think you'll find it works fine, if you read it (reply #7).

[john010117]

If you've got a MySQL database available, store it on there.

[MadTechie]

@MadTechie

 

Saving the new value ???

 

Its been a long week..

 

corrected (kinda)

 

<?php
session_start();

function do_count($tra) {
//     $tra = 0;                      //remove, otherwise the function always returns 1
       $tra++;
       return ($tra);
}
if(isset($_SESSION['counter']))
{
$tra = $_SESSION['counter'];
}else{
$tra = 1;
}

$_SESSION['counter'] = do_count($tra);  // need to do something with returned result, such as echo it.
echo $_SESSION['counter'];
?>

 

 

But Barand's is a "real" solution

[darklight]

I think you'll find it works fine, if you read it (reply #7).

 

It's not working.  It always echo's 1 or 2.

 

If you've got a MySQL database available, store it on there.

 

I don't know mySQL.

 

@MadTechie

 

Saving the new value ???

 

Its been a long week..

 

corrected (kinda)

 

<?php
session_start();

function do_count($tra) {
//     $tra = 0;                      //remove, otherwise the function always returns 1
       $tra++;
       return ($tra);
}
if(isset($_SESSION['counter']))
{
$tra = $_SESSION['counter'];
}else{
$tra = 1;
}

$_SESSION['counter'] = do_count($tra);  // need to do something with returned result, such as echo it.
echo $_SESSION['counter'];
?>

 

 

But Barand's is a "real" solution

 

Why does it add 2?