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@ 2017-12-04T19:53:12Z

<?php
// your arbitrary vars
$rating = 1;
$review_total = 100;
$description = 'How do I not break json';
$heading_title = 'As above...';
$thumb = 'http://.../thumb.jpg';

$json = [
    '@context' => 'http://schema.org',
    '@type' => 'Product',
    'aggregateRating' => [
        [
            '@type' => 'AggregateRating',
            'ratingValue' => $rating,
            'reviewCount' => $review_total,
        ]
    ],
    'description' => $description,
    'name' => $heading_title,
    'image' => $thumb,
    'review' => [],
];

// query reviews from db
$reviews = [
    [
        'author' => 'Lawrence Cherone',
        'date_added' => '11/11/17 00:00:00',
        'text' => 'You should instead use json_encode',
        'rating' => 1
    ],
];

foreach ($reviews as $review) {
    $json['review'][] = [
        '@type' => 'Review',    
        'author' => $review['author'],       
        'datePublished' => $review['date_added'],    
        'description' => '',    
        'name' => $review['author'], 
        'reviewRating' => [
            '@type' => 'Rating',
            'bestRating' => '5',
            'ratingValue' => $review['rating'],
            'worstRating' => '1',
        ],
    ];
}
?>

<script type="application/ld+json">
<?= json_encode($json, JSON_PRETTY_PRINT) ?>
</script>

Output for git.master, git.master_jit, rfc.property-hooks: <script type="application/ld+json"> { "@context": "http:\/\/schema.org", "@type": "Product", "aggregateRating": [ { "@type": "AggregateRating", "ratingValue": 1, "reviewCount": 100 } ], "description": "How do I not break json", "name": "As above...", "image": "http:\/\/...\/thumb.jpg", "review": [ { "@type": "Review", "author": "Lawrence Cherone", "datePublished": "11\/11\/17 00:00:00", "description": "", "name": "Lawrence Cherone", "reviewRating": { "@type": "Rating", "bestRating": "5", "ratingValue": 1, "worstRating": "1" } } ] }</script>

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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