What is the significance of using !== or !feof() in a while-loop condition in PHP?

Using !== or !feof() in a while-loop condition in PHP is significant because it ensures that the loop continues to execute until the end of the file is reached. The !== operator checks for both value and type, while !feof() checks if the end of the file has been reached. This prevents the loop from running indefinitely and helps in properly reading data from a file. 

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

while (($line = fgets($file)) !== false) {
    // Process the line
}

fclose($file);

Keywords

PHP !== !feof() while-loop condition

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