How to Divide Array list in 3 Parts - php

Question

<?php
$count=count($admissions);
$divide=$count/3;
$divide=round($divide);
foreach($admissions as $key => $row)
{
if(//First Part )
{
echo "Alpha";}
else if(//2nd Part )
{
echo "Beta";
}else
{
echo "Gamma";
}
}
?>
I have a dynamic array list and i want to divide it equally in 3 parts.
if Count of array is 30.
So i want to echo for first 10 record
echo "Alpha";
Second 10 Records
Echo "Beta";
3rd 10 Records
Echo "Gamma";
if array size is 60 then it will be divided into 20 parts each.
How can i echo the alpha, beta and gamma.

Answer 1

I thing your question is about if conditions. So you can use this code:
$count=count($admissions);
$divide=$count/3;
$divide=round($divide);
$i = 1;
foreach($admissions as $key => $row)
{
if($i > 0 && $i <= $divide)
{
echo "Alpha";
}
else if($i > $divide && $i <= ($divide*2))
{
echo "Beta";
}
else //equal else if($i > $divide*2 )
{
echo "Gamma";
}
$i++;
}

Answer 2

Try using a normal for loop :
For ($i = 0; $i < $count ; $i++){
echo "alpha";
}
For ($i = $count; $i < 2*$count ; $i++){
echo "beta";
}
For ($i = 2*$count; $i < 3*$count ; $i++){
echo "gamma";
}

Answer 3

Try this hope you are expecting this. According to the requirement which you specified in comments.
Try this code snippet here
<?php
ini_set('display_errors', 1);
$range=range(0,12);
$result=array_chunk($range, 4);
if(count($result[count($result)-1])!=4)
{
$temp=$result[count($result)-1];
unset($result[count($result)-1]);
$result[count($result)-1]=array_merge($result[count($result)-1],$temp);
}
print_r($result);

Answer 4

Let's have an array of three elements and play with the modulo:
<?php
$count=count($admissions);
$divide=$count/3;
$divide=round($divide);
$divisions = array(0 => array(), 1 => array(), 2 => array())
$modulo = 0;
foreach($admissions as $key => $row)
{
$divisions[($modulo + 1) % 3][$key] = $row;
}
This will do the partitioning you need.