How can PHP documentation be effectively utilized to find information on checking for file existence?

To check for the existence of a file in PHP, you can use the `file_exists()` function. This function takes a file path as a parameter and returns `true` if the file exists and `false` if it does not. 

$file_path = '/path/to/file.txt';

if (file_exists($file_path)) {
    echo 'File exists!';
} else {
    echo 'File does not exist';
}

Keywords

PHP documentation file existence checking functions libraries

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