What is the best practice for reading the contents of a text file into an array in PHP before writing to the beginning of the file?

When reading the contents of a text file into an array in PHP before writing to the beginning of the file, it is important to open the file in read mode first, read its contents into an array using file() function, then close the file. After making changes to the array, open the file in write mode and write the modified array back to the file. 

// Open the file in read mode
$file = fopen('example.txt', 'r');

// Read the contents of the file into an array
$lines = file('example.txt');

// Close the file
fclose($file);

// Make changes to the $lines array here

// Open the file in write mode
$file = fopen('example.txt', 'w');

// Write the modified array back to the file
foreach ($lines as $line) {
    fwrite($file, $line);
}

// Close the file
fclose($file);

Keywords

PHP file handling array file_get_contents fseek

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