php: loop through json array
PhpJsonPhp Problem Overview
I have a json array:
[ { "var1": "9", "var2": "16", "var3": "16" }, { "var1": "8", "var2": "15", "var3": "15" }]
How can I loop through this array using php?
Php Solutions
Solution 1 - Php
Decode the JSON string using json_decode()
and then loop through it using a regular loop:
$arr = json_decode('[{"var1":"9","var2":"16","var3":"16"},{"var1":"8","var2":"15","var3":"15"}]');
foreach($arr as $item) { //foreach element in $arr
$uses = $item['var1']; //etc
}
Solution 2 - Php
Set the second function parameter to true if you require an associative array
Some versions of php require a 2nd paramter of true if you require an associative array
$json = '[{"var1":"9","var2":"16","var3":"16"},{"var1":"8","var2":"15","var3":"15"}]';
$array = json_decode( $json, true );
Solution 3 - Php
First you have to decode your json :
$array = json_decode($the_json_code);
Then after the json decoded you have to do the foreach
foreach ($array as $key => $jsons) { // This will search in the 2 jsons
foreach($jsons as $key => $value) {
echo $value; // This will show jsut the value f each key like "var1" will print 9
// And then goes print 16,16,8 ...
}
}
If you want something specific just ask for a key like this. Put this between the last foreach.
if($key == 'var1'){
echo $value;
}
Solution 4 - Php
Use json_decode
to convert the JSON string to a PHP array, then use normal PHP array functions on it.
$json = '[{"var1":"9","var2":"16","var3":"16"},{"var1":"8","var2":"15","var3":"15"}]';
$data = json_decode($json);
var_dump($data[0]['var1']); // outputs '9'