In what scenarios is it advisable to use a loop when reading lines from a text file in PHP?

When reading lines from a text file in PHP, it is advisable to use a loop when you want to process each line individually or perform some operation on each line. This is useful when dealing with large text files where reading the entire file into memory at once may not be feasible. By using a loop, you can efficiently read and process each line one at a time. 

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

if ($file) {
    while (($line = fgets($file)) !== false) {
        // Process each line here
        echo $line;
    }
    fclose($file);
} else {
    echo "Error opening file.";
}

Keywords

loop text file reading scenarios PHP

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