PHP fails to parse JSON - Unexpected Integer - php

Question

I'm trying to make an application that will use a JSON input. Below is some code that shows the problem when run. The problem being a syntax error; unexpected integer from the "etag" line ("$etag": "W/\"datetime'2019-10-31T23%3A22%3A09.7835369Z'\"",). When I remove the etag line it runs fine but otherwise I get an error. Can I remove the etag line (not needed anyway) before being parsed or get around it some other way? I unfortunately cant change what the API sends.
<?php
$json = '{
"Form": {
"Id": "1",
"InternalName": "SignUp",
"Name": "Sign Up"
},
"$version": 7,
"$etag": "W/\"datetime'2019-10-31T23%3A22%3A09.7835369Z'\"",
"Email": "test#email.com",
"Phone": "[phone]",
"CarrierServiceProvider": "Sprint",
"WTSKeywords": "Testing WTS",
"WTBKeywords": "Testing WTB",
"Id": "1-3",
"Email_IsRequired": false,
"Phone_IsRequired": false,
"CarrierServiceProvider_IsRequired": true
}';
$data = json_decode($json);
echo $data->Email;
echo "\n";
echo $data->WTBKeywords;
?>
Code should output: test#email.com Testing WTB

Answer 1

You json string has both ' and ", so you cannot simple use single or double quoted.
Use heredoc like this,
$json = <<<EOT
{
"Form": {
"Id": "1",
"InternalName": "SignUp",
"Name": "Sign Up"
},
"$version": 7,
"$etag": "W/\"datetime'2019-10-31T23%3A22%3A09.7835369Z'\"",
"Email": "test#email.com",
"Phone": "[phone]",
"CarrierServiceProvider": "Sprint",
"WTSKeywords": "Testing WTS",
"WTBKeywords": "Testing WTB",
"Id": "1-3",
"Email_IsRequired": false,
"Phone_IsRequired": false,
"CarrierServiceProvider_IsRequired": true
}
EOT;
$data = json_decode($json);
echo $data->Email;
echo "\n";
echo $data->WTBKeywords;