Tests for end-of-file on a file pointer

# feof

(PHP 4, PHP 5, PHP 7)

feof — Tests for end-of-file on a file pointer

### Descrierea

feof ( resource `$handle` ) : bool

Tests for end-of-file on a file pointer.

### Parametri

`handle`

  Indicatorul fișierului trebuie să fie valid și trebuie să indice la un fișier deschis cu succes cu ajutorul fopen() sau fsockopen() (și să nu fie închis cu fclose()).

### Valorile întoarse

Returns `TRUE` if the file pointer is at EOF or an error occurs (including socket timeout); otherwise returns `FALSE`.

### Note

Avertizare

If a connection opened by fsockopen() wasn't closed by the server, feof() will hang. To workaround this, see below example:

Example #1 Handling timeouts with feof()

`<?php
function safe_feof($fp, &$start = NULL) {
$start = microtime(true);
return feof($fp);
}
/* Assuming $fp is previously opened by fsockopen() */
$start = NULL;
$timeout = ini_get('default_socket_timeout');
while(!safe_feof($fp, $start) && (microtime(true) - $start) < $timeout)
{
/* Handle */
}
?>`
Avertizare

If the passed file pointer is not valid you may get an infinite loop, because feof() fails to return `TRUE`.

Example #2 feof() example with an invalid file pointer

`<?php
// if file can not be read or doesn't exist fopen function returns FALSE
$file = @fopen("no_such_file", "r");
// FALSE from fopen will issue warning and result in infinite loop here
while (!feof($file)) {
}
fclose($file);
?>`