PHP array limit? [closed] - php

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friends i am new in php. I am playing with array. So i am unable to solve one login using array. In this program i want to show array limit. I have number of data it's come form Database. But i want to show limit data like ( 10 posts only ). I know the MYSQL query to show limit data. But i am trying with array. So please help to solve this logic thanks.
here is the code.
$reverse = array_reverse($showpost, true);
foreach ($reverse as $key=>$postvalue) {
$latestpost = explode(',', $postvalue['postcategory']);
if (in_array("3", $latestpost)) {
// result here...
}
}
I have save the category this format (1,2,3,4,5,6). That's why I have used explode() function.
My DataBase fields name are ( post_id, postname, postcategory, postdisc,).

Answer 1

Not sure if I've understood the problem correctly but I think it maybe related to this link
$input = array("a", "b", "c", "d", "e");
$output = array_slice($input, 0, 3); // returns "a", "b", and "c"

Answer 2

You can use array_chunk() function
CODE:
<?php
$reverse = array_reverse($showpost, true);
foreach($reverse as $key=>$postvalue){
$latestpost = explode(',', $postvalue['postcategory']);
$chunks = array_chunk($latestpost, 3);
print_r($chunks);
}
?>

Answer 3

If you're only wanting to show 10 rows, and result here... is where each post is show, then something like this may work:
$postsShown = 0;
$reverse = array_reverse($showpost, true);
foreach ($reverse as $key => $postvalue) {
if ($postsShown >= 10) {
break;
}
$latestpost = explode(',', $postvalue['postcategory']);
if (in_array("3", $latestpost)) {
// result here...
$postsShown++;
}
}
All this does is count how many posts are shown using the $postsShown variable, and increments it when a new post is shown. When this variable reaches 10 (IE, 10 posts are shown), the loop will be terminated using the break command.

Answer 4

maybe you can use a session variable to save few attempts the user used to log, and you validate it in the server.
with this code you can create a session variable:
session_start();
$_SESSION['name_of_my_variable'] = 'value of my session variable';
and for example each time the user tries to log you can increase the value of your counter in the session variable:
the first time you needs create the session variable:
session_start();
$_SESSION['log_counter'] = 1;
and the next attempts you increment the counter like this:
session_start();
$log_counter = $_SESSION['log_counter'];
$log_counter++;
$_SESSION['log_counter'] = $log_counter;
check if the user already reached the limit:
session_start();
if ($_SESSION['log_counter'] == 10)
{
echo "Limit reached";
}
This is the final code:
// init session variables
session_start();
// Check if exist the session variable
if (isset($_SESSION['log_counter']))
{
// Enter here if the session variable exist
// check if the log_counter is equals to the limit
if ($_SESSION['log_counter'] == 10)
{
echo "Limit reached";
}else
{
// increase the counter
$log_counter = $_SESSION['log_counter'];
// this increate 1 more to the log_counter session variable
$log_counter++;
// here we save the new log_counter value
$_SESSION['log_counter'] = $log_counter;
}
}else
{
// Enter here if not exist the session variable
// this create the log_counter session variable
$_SESSION['log_counter'] = 1;
}