note 48420 deleted from function.file by bjori

Note Submitter: corychristison[-At]lavacube(dot.)com ---- The file function will load the entire file before you can do anything to it [remove lines, explode() each line, and so on...] I wrote a function [ file_v2() ] to help eliminate the restrictions of file(). Below are a few features/abilites file_v2() has over file(). file_v2() features: - uses an editable buffer size, for performance tweaking. - ability set maximum lines returned[from beginning] - optional automatically rtrim the line - optional ability to provide a callback function for each array element Here is the code: <?php function file_v2 ( $filename, $return_max_lines=0, $callback_func=null, $do_rtrim=true, $buffer_size=1024 ) { // open file pointer $open = fopen( $filename, 'rb' ); // start an array [good coding practice] $open_data = array(); // start an internal line counter [good coding practice] $line=0; // begin the loop while( !feof($open) ) { if( $do_rtrim ) { // add line to array, do an rtrim() $open_data[$line] = rtrim(fgets($open, $buffer_size)); } else { // add line to array $open_data[$line] = fgets($open, $buffer_size); } if( $callback_func != null && function_exists( $callback_func ) ) { eval($callback_func . '($open_data[$line]);'); } // +1 to the internal line counter $line++; if( $return_max_lines > 0 ) { if( $line >= $return_max_lines ) { break; } } } // close the file pointer fclose($open); // return the data return $open_data; } ?> Example usage: ========= file_test.txt ========= 01 firstname_1 lastname_1 fake_email@fake_addr1.fk 02 firstname_2 lastname_2 fake_email@fake_addr2.fk 03 firstname_3 lastname_3 fake_email@fake_addr3.fk 04 firstname_4 lastname_4 fake_email@fake_addr4.fk 05 firstname_5 lastname_5 fake_email@fake_addr5.fk 06 firstname_6 lastname_6 fake_email@fake_addr6.fk 07 firstname_7 lastname_7 fake_email@fake_addr7.fk 08 firstname_8 lastname_8 fake_email@fake_addr8.fk 09 firstname_9 lastname_9 fake_email@fake_addr9.fk 10 firstname_10 lastname_10 fake_email@fake_addr10.fk 11 firstname_11 lastname_11 fake_email@fake_addr11.fk 12 firstname_12 lastname_12 fake_email@fake_addr12.fk ========= test.php ========= <?php // we will assume the function is in here somewhere // create a callback function function mk_callback( &$input ) { $input = explode("\t", $input); } $open = file_v2('file_test.txt', 3, 'mk_callback'); // output array using print_r() print_r($open); ?> Example will output: Array ( [0] => Array ( [0] => 01 [1] => firstname_1 [2] => lastname_1 [3] => fake_email@fake_addr1.fk ) [1] => Array ( [0] => 02 [1] => firstname_2 [2] => lastname_2 [3] => fake_email@fake_addr2.fk ) [2] => Array ( [0] => 03 [1] => firstname_3 [2] => lastname_3 [3] => fake_email@fake_addr3.fk ) ) This is one of my few contributions to this fine world. Happy coding everybody! - Cory Christison