Need help on loop in PHP

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I have a for loop like bellow:

PHP

$a = array('a', 'b', 'c', 'd', 'e', 'g');
$b = array('1', '2');
$count_a = count($a); //count $a
$count_b = count($b); //count $b

$u = 0;
for($i = 0; $i < $count_a; $i++){
    $result[] = $a[$i].'-'.$b[$u];
    $u++;
    if($u == $count_b){
        print_r($result);
        $u = 0;
    }
}

And result for it:

PHP

Array
(
    [0] => a-1
    [1] => b-2
)
Array
(
    [0] => a-1
    [1] => b-2
    [2] => c-1
    [3] => d-2
)
Array
(
    [0] => a-1
    [1] => b-2
    [2] => c-1
    [3] => d-2
    [4] => e-1
    [5] => g-2
)

I want the result to be:

PHP

Array
(
    [0] => a-1
    [1] => b-2
)
Array
(
    [2] => c-1
    [3] => d-2
)
Array
(
    [4] => e-1
    [5] => g-2
)

What I have to do? please help me!

What I have tried:

I try search google in 1 day but it fail

Posted 28-Sep-17 22:57pm

Heaven's Feels

Updated 28-Sep-17 23:27pm

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2 solutions

Solution 2

Another solution

<?php
$a = array('a', 'b', 'c', 'd', 'e', 'g');
$b = array('1', '2');
$count_a = count($a); //count $a
$count_b = count($b); //count $b
 
for($i=0;$i<$count_a;) {
  for($j=0;$j<$count_b;$j++, $i++) {
    $result[$i] = $a[$i]."-".$b[$j];
  }
  print_r($result);
  unset($result);
}

But if you want them all in one array

<?php
$a = array('a', 'b', 'c', 'd', 'e', 'g');
$b = array('1', '2');
$count_a = count($a); //count $a
$count_b = count($b); //count $b
 
for($i=0;$i<$count_a;) {
  for($j=0;$j<$count_b;$j++, $i++) {
    $result[$i] = $a[$i]."-".$b[$j];
  }
}
  print_r($result);

Posted 28-Sep-17 23:27pm

Mohibur Rashid

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Jochen Arndt · Accepted Answer · 2017-09-28T23:08:00

Solution 1

You have to clear the result array too after printing it out:

PHP

for($i = 0; $i < $count_a; $i++){
    $result[] = $a[$i].'-'.$b[$u];
    $u++;
    if($u == $count_b){
        print_r($result);
        $u = 0;
        unset($result);
    }
}

Posted 28-Sep-17 23:08pm

Jochen Arndt