iterate through json_encode array in PHP - php

Question

i'm having problem on how to iterate in the array in json_encode.
I do ajax POST, in where i have a looping code that do "array push" in jQuery, something like this:
$(this).closest('tr.header').nextUntil('.header').each(function(){
i++;
var forms="<form method='POST'>"+$(this).html()+'</form>';
data.push($(forms).serializeArray());
});
So when i pass this to my controller/ other page, i do this:
$dataList = json_encode($this->input->post("form"));
echo $dataList ;
And the output is:
[
[{"name":"category_1", "values":"packages"},
{"name":"PK_1", "values": "1"}
],
[{"name":"category_2", "value":"products"},
{"name":"PK_2", "value": "3"}
]
]
I have tried to do :
foreach ($dataList as $data) {
echo $data . "\n";
}
But only give me error on foreach.
Thanks in advance.

Answer 1

Use json_decode()function to get your data as an array then foreach your data.
$a = '[
[{"name":"category_1", "values":"packages"},
{"name":"PK_1", "values": "1"}
],
[{"name":"category_2", "value":"products"},
{"name":"PK_2", "value": "3"}
]
]';
echo '<pre>';
$res = json_decode($a, true);
$newArr = [];
foreach($res as $data => $val)
{
foreach($val as $key2 => $val2)
{
$newArr[] = $val2;
}
}
foreach($newArr as $key => $val)
{
echo 'Name = ' . $val['name'] . ' Values = ' . $val['value'] . '<br/>';
}

Answer 2

Just decode the string and loop through the created array.
<?php
$a = '[
[{"name":"category_1", "values":"packages"},
{"name":"PK_1", "values": "1"}
],
[{"name":"category_2", "value":"products"},
{"name":"PK_2", "value": "3"}
]
]';
echo '<pre>';
$res = json_decode($a, true);
$newArr = array();
foreach($res as $data => $val)
{
foreach($val as $k=>$value){
$value=array_values($value);
echo 'Name => ' . $value[0] . ' Value => ' . $value[1] . '<br/>';
}
}
?>

Answer 3

for array output you need to decode it with json_decode()
here is sample code.
$encode_data = '[[{"name":"category_1", "values":"packages"},{"name":"PK_1", "values": "1"}],[{"name":"category_2", "value":"products"},{"name":"PK_2", "value": "3"}]]';
$dataAr = json_decode($encode_data , true);
foreach($dataAr as $data)
{
foreach($data as $value){
$value=array_values($value);
echo 'name => ' .$value[0] . ' value => ' .$value[1];
echo "<br>";
}
}