How to read a large file line by line?

Question

I want to read a file line by line, but without completely loading it in memory.

My file is too large to open in memory, and if try to do so I always get out of memo

Answer 1

Function to Read with array return

function read_file($filename = ''){
    $buffer = array();
    $source_file = fopen( $filename, "r" ) or die("Couldn't open $filename");
    while (!feof($source_file)) {
        $buffer[] = fread($source_file, 4096);  // use a buffer of 4KB
    }
    return $buffer;
}