WordPress at a glance
function is not described

PO::read_line() public WP 1.0

{} It's a method of the class: PO{}

No Hooks.

Return

true|false. Null. Nothing.

Usage

$PO = new PO();
$PO->read_line( $f, $action );
$f(resource) (required)
-
$action(string)
-

Code of PO::read_line() WP 5.7

<?php
function read_line( $f, $action = 'read' ) {
	static $last_line     = '';
	static $use_last_line = false;
	if ( 'clear' === $action ) {
		$last_line = '';
		return true;
	}
	if ( 'put-back' === $action ) {
		$use_last_line = true;
		return true;
	}
	$line          = $use_last_line ? $last_line : fgets( $f );
	$line          = ( "\r\n" === substr( $line, -2 ) ) ? rtrim( $line, "\r\n" ) . "\n" : $line;
	$last_line     = $line;
	$use_last_line = false;
	return $line;
}