looping secondary json array, selecting specific array - php

Question

I recently asked a question about looping an array which was answered and worked with this:
Answer Marked.
My own modified Answer is below too.
JSON
{"product": [{
"title":"Product One",
"price":"Price One",
"desc":"Description One"
}]
}
PHP
foreach($product['product'] as $value) {
echo "Title : " .$value['title'];
}
I've been trying to figure out how to loop a second level(?) array such as this image array.
JSON
{"product": [{
"title":"Product One",
"price":"Price One",
"desc":"Description One",
"image": [{
"img":"image 1 1"
},{
"img":"image 1 2"
},{
"img":"image 1 3"
}]
}, {
"title":"Product Two",
"price":"Price Two",
"desc":"Description Two",
"image": [{
"img":"image 2 1"
},{
"img":"image 2 2"
},{
"img":"image 2 3"
}]
}]
}
So far I've tried this:
<?php
foreach($product['product']['image'] as $value) {
echo "Image: " .$value['img'] . "<br>";
}
?>
and
<?php
foreach($product['product'] as $value) {
echo "Image: " .$value['image']['img'] . "<br>";
}
?>
As well as a few variations of similar ideas.
My desired output is:
Image: image 1 1
Image: image 1 2
Image: image 1 3
Image: image 2 1
Image: image 2 2
Image: image 2 3
Also, how would I go about selecting an array via a value eg..
JSON
{"product": [{
"id":"001"
"title":"Product One",
"price":"Price One",
"desc":"Description One"
},{
"id":"002"
"title":"Product One",
"price":"Price One",
"desc":"Description One"
}]
}
PHP
if ( isset( $product['product']['id'] && $product['product']['id'] == "001") ) {
foreach(*specific array as $value) {
echo "Title : " .$value['title'] . "<br>";
echo "Price : " .$value['price'] . "<br>";
}
etc..
I was thinking a better way would be to set the array as the id so I can just say go grab array {"product": [{"001": [{"title:..."002": [{... instead of product with a value of 001 for the key id. Just not sure about a lot of things so it's hard to find my errors.
Thanks in advance.

Answer 1

For the first section you can use following;
<?php
foreach($product['product'] as $value) {
foreach($value["image"] as $image) {
echo "Image: " .$image['img'] . "<br>";
}
}
?>
Here is a working demo: Demo
For the second part you can use following;
function getArrValue($key, &$product) {
foreach ($product["product"] as $product) {
if (!empty($product["id"]) && $product["id"] == $key) {
return $product;
}
}
}
var_dump(getArrValue("001", $product));
You can see demo here: Demo

Answer 2

You will need to iterate over the first dimension before you can iterate over the second dimension:
foreach ($data['product'] as $product) {
//echo "Title : " . $product['title'] . "\n";
foreach ($product['image'] as $image) {
echo "Image: {$image['img']}\n";
}
}

Answer 3

You can use $key=>$value to get property name
foreach($product['product'] as $key=>$value){
if ($key =="image"){
foreach($value as $img){
echo "Image: ".$img;
}
}
}

Answer 4

Figured out a small solution which fits my needs based off paulitto's answer.
PHP
foreach($product['product'] as $key=>$value){
if ($value['id'] =="001") {
echo "Title: " .$value['title']."<br>";
foreach($value['image'] as $img){
echo "Image: " .$img['img']."<br>";
}
}
}
OUTPUT
Title: Product One
Image: image 1 1
Image: image 1 2
Image: image 1 3
Thanks everyone.