How can I create a file in PHP? Example code: - Biz Tech

How can I create a file in PHP? Example code:

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$filename = "example.txt";
$file = fopen($filename, "w");

fwrite($file, "This is an example file");

fclose($file);

How can I use the array_search function to search for a value in an array and return its key in PHP? Example code:

How can I use the strrev function to reverse a string in PHP? Example code:

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How can I use the array_pop function to remove the last element from an array in PHP? Example code:

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How can I use the array_filter function to filter an array based on a condition in PHP? Example code:

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How can I use the mkdir function to create a directory in PHP? Example code:

How can I use the array_reduce function to apply a function to each element of an array and reduce it to a single value in PHP? Example code:

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How can I use the array_merge function to merge two or more arrays in PHP? Example code:

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How can I sort an associative array by its keys in PHP? Example code:

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