How can PHP variables be concatenated to form a file path for file_exists() function in PHP?

To concatenate PHP variables to form a file path for the file_exists() function, you can simply use the "." operator to join the variables and strings together. This allows you to dynamically create file paths based on the values of your variables. Make sure to properly format the file path with the correct directory separators to ensure the file_exists() function works correctly. 

$directory = "path/to/directory/";
$filename = "example.txt";

$file_path = $directory . $filename;

if(file_exists($file_path)){
    echo "File exists at: " . $file_path;
} else {
    echo "File does not exist at: " . $file_path;
}

Keywords

PHP variables concatenation file path file_exists

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