fgets
Gets line from file pointer
Description
stringfalse fgets(resource $stream, intnull $length = null)
Parameters
-
stream
-
The file pointer must be valid, and must point to
a file successfully opened by fopen or
fsockopen (and not yet closed by
fclose).
-
length
-
Reading ends when length - 1 bytes have been
read, or a newline (which is included in the return value), or an EOF
(whichever comes first). If no length is specified, it will keep
reading from the stream until it reaches the end of the line.
Return Values
Returns a string of up to length - 1 bytes read from
the file pointed to by stream. If there is no more data
to read in the file pointer, then false is returned.
If an error occurs, false is returned.
Examples
Example #1 Reading a file line by line
<?php
$fp = @fopen("/tmp/inputfile.txt", "r");
if ($fp) {
while (($buffer = fgets($fp, 4096)) !== false) {
echo $buffer, PHP_EOL;
}
if (!feof($fp)) {
echo "Error: unexpected fgets() fail\n";
}
fclose($fp);
}
?>
Notes
Note: If PHP is not properly recognizing
the line endings when reading files either on or created by a Macintosh
computer, enabling the
auto_detect_line_endings
run-time configuration option may help resolve the problem.
Note:
People used to the 'C' semantics of fgets
should note the difference in how EOF is returned.
See Also
- fgetss
- fread
- fgetc
- stream_get_line
- fopen
- popen
- fsockopen
- stream_set_timeout