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for PHP 5.3, 5.4, and 5.5. Meta also developed a similar augmentation for JavaScript, named JSX.

Origins

XHP was loosely inspired by ECMAScript for XML and created by Marcel Laverdet. It was first developed for Facebook Lite as a new UI rendering layer but was later ported over to Facebook's www and mobile web stack as well as incorporated into HipHop for PHP.

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