What resources or tutorials are recommended for learning the fundamentals of string manipulation in PHP?

To learn the fundamentals of string manipulation in PHP, it is recommended to refer to the official PHP documentation on string functions. Additionally, online tutorials and courses on platforms like Codecademy, W3Schools, and PHP.net can provide comprehensive guidance on manipulating strings in PHP. 

// Example of string manipulation in PHP
$string = "Hello, World!";
echo strtoupper($string); // Outputs: HELLO, WORLD!

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PHP string manipulation tutorials resources fundamentals

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