What is the difference between using fopen and file_get_contents in PHP to read a file?

The main difference between using fopen and file_get_contents in PHP to read a file is that fopen is used to open a file resource, allowing for more control over reading and writing operations, while file_get_contents reads the entire contents of a file into a string variable in one step. If you need to perform more complex operations on a file, such as reading it line by line or writing to it, fopen is the better choice. However, if you simply need to read the contents of a file into a variable, file_get_contents is more convenient. 

// Using fopen to read a file
$filename = 'example.txt';
$handle = fopen($filename, 'r');
if ($handle) {
    while (($line = fgets($handle)) !== false) {
        echo $line;
    }
    fclose($handle);
} else {
    echo 'Error opening the file.';
}

// Using file_get_contents to read a file
$filename = 'example.txt';
$file_contents = file_get_contents($filename);
if ($file_contents !== false) {
    echo $file_contents;
} else {
    echo 'Error reading the file.';
}

Keywords

fopen file_get_contents PHP read file difference

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