Base64 in PHP: base64_encode and base64_decode Guide
How to use base64_encode and base64_decode in PHP, handle binary files, build data URIs, and safely transmit encoded data in web applications.
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Tags: encoding, php, base64
Base64 in PHP: base64encode and base64decode Guide PHP has had and since PHP 4, and they remain the correct tools for almost every Base64 task. This guide covers encoding strings and files, the important parameter in , how to implement URL-safe Base64 (PHP doesn't have a built-in for this), and building data URIs. base64decode decodes a Base64 string back to bytes. The parameter is the most important thing to know about this function. Without strict mode (the default) By default, ignores invalid characters. This means whitespace, newlines, and other non-Base64 characters are silently stripped before decoding. This can produce garbage output when given malformed input. With strict mode Pass as the second argument to enable strict mode. If the input contains any characters outside the…
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