I have two JSON objects and I would like to compare their structure. How can I do it?
Those object are being generated on-the-fly and depending on dynamic content. Which means that the objects are always different but most of the time have the same structure. I want to be able to catch the changes once they occur.
Example: These two objects should be considered as equal, because both have the same structure: index var and tags array.
{
"index": 0,
"tags": [
"abc"
]
}
{
"index": 1,
"tags": [
"xyz"
]
}
Thoughts?
TreeWalker is a simple and smal API in php
(I developed this library, i hope it helps you)
It offers two methods
1- Get json difference
2- Edit json value (Recursively)
this method will return the diference between json1 and json2
$struct1 = array("casa"=>1, "b"=>"5", "cafeina"=>array("ss"=>"ddd"), "oi"=>5);
$struct2 = array("casa"=>2, "cafeina"=>array("ss"=>"dddd"), "oi2"=>5);
//P.s
print_r($treeWalker->getdiff($struct1, $struct2))
{
new: {
b: "5",
oi: 5
},
removed: {
oi2: 5
},
edited: {
casa: {
oldvalue: 2,
newvalue: 1
},
cafeina/ss: {
oldvalue: "dddd",
newvalue: "ddd"
}
},
time: 0
}
It's a bit rough, but you get the picture;
$json = '[
{
"index": 0,
"tags": [
"abc"
]
},
{
"index": 1,
"tags": [
"xyz"
]
},
{
"foo": 2,
"bar": [
"xyz"
]
}]';
$array = json_decode($json, true);
$default = array_keys($array[0]);
$error = false;
$errors = array();
foreach ($array as $index => $result):
foreach ($default as $search):
if (!isset($result[$search])):
$error = true;
$errors[] = "Property '{$search}' at entry '{$index}' not found. ";
endif;
endforeach;
endforeach;
if ($error):
echo 'Objects are not the same. ';
foreach ($errors as $message):
echo $message;
endforeach;
endif;
returns:
Objects are not the same. Property 'index' at entry '2' not found. Property 'tags' at entry '2' not found.
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