How can I use the file_put_contents function to write a string to a file in PHP? Example code: - Biz Tech

How can I use the file_put_contents function to write a string to a file in PHP? Example code:

$file_contents = "Hello World!";

file_put_contents("example.txt", $file_contents);

How can I use the filemtime function to get the last modified time of a file in PHP? Example code:

How can I convert a string to uppercase in PHP? Example code:

How can I format a date in PHP? Example code:

How to code in PHP

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How can I use the in_array function to check if an element exists in an array in PHP? Example code:

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How can I use the array_rand function to get a random key from an array in PHP? Example code:

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How can I use the json_encode function to convert an array or object to a JSON string in PHP? Example code:

How can I connect to a MySQL database using PHP? Example code.

How can I retrieve data from a MySQL database using PHP? Example code

How can I use the array_slice function to get a portion of an array in PHP? Example code:

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How can I use the array_chunk function to split an array into chunks in PHP? Example code:

How can I calculate the difference between two dates in PHP? Example code: