unable to find error with array_merge

Question

I am trying to insert batch query in code igniter, I am not able to make array_merge work. Don't know whats the problem. M getting blank array.

        $epin_amt = $this->input->post('amount');
            $qty = $this->input->post('qty');
            $data = array();
            for ($i = 0; $i <= $qty; $i++) {
                $array = array(
                    'epin'   => mt_rand(100000, 999999),
                    'amount' => $epin_amt,
                );
             array_merge($data, $array);
            }
print_r($data) ; // Produce : array( )

Brian Gottier · Accepted Answer · 2017-09-09 16:32:57Z

2

You have to assign the merged array back to your $data variable:

<?php

$epin_amt = /*$this->input->post('amount')*/ 5;
$qty = /*$this->input->post('qty')*/6;

$data = array();
for ($i = 0; $i <= $qty; $i++) {
    $array = array(
        'epin'   => mt_rand(100000, 999999),
        'amount' => $epin_amt,
    );
 $data = array_merge($data, $array);
}

print_r($data) ;

answered Sep 9, 2017 at 16:32

Brian Gottier

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2 Comments

Haren Sarma Over a year ago

But this time I am getting only 1 array . Array ( [epin] => 653552 [amount] => 100 )

Brian Gottier Over a year ago

Stack overflow recommends that you provide an expected result. There's no way I can know what you expect now, because looking at your code, all I see is a single $epin_amount, and a single $qty value. Please revise your question to show the expected result, because as it is, based on the wording of your question, you are getting answers that are correct, they just don't meet your needs.

Alexander Yancharuk · Accepted Answer · 2017-09-09 16:33:16Z

2

array_merge returns array. You need something like this:

$result = array_merge($data, $array);

answered Sep 9, 2017 at 16:33

Alexander Yancharuk

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Comments

ishegg · Accepted Answer · 2017-09-09 16:36:15Z

0

You are merging the arrays but it's not done by reference so you're throwing the resulting array away. array_push() it instead, that will keep adding the arrays to your $data array:

<?php
$epin_amt = 10;
$qty = 20;
$data = array();
for ($i = 0; $i <= $qty; $i++) {
    $array = array(
        'epin'   => mt_rand(100000, 999999),
        'amount' => $epin_amt,
    );
 array_push($data, $array);
}
print_r($data) ;

answered Sep 9, 2017 at 16:36

ishegg

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