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fgets
Gets line from file pointer
(PHP 4, PHP 5)
string fgets ( resource handle [, int length] )
Parameters
- handle
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, on a newline (which is included in the return value), or on EOF (whichever comes first). If no length is specified, it will keep reading from the stream until it reaches the end of the line.
Note:Until PHP 4.3.0, omitting it would assume 1024 as the line length. If the majority of the lines in the file are all larger than 8KB, it is more resource efficient for your script to specify the maximum line length.
Return Values
Returns a string of up to length - 1 bytes read from the file pointed to by handle.
If an error occurs, returns FALSE.
ChangeLog
| Version | Description |
|---|---|
| 4.3.0 | fgets() is now binary safe |
| 4.2.0 | The length parameter became optional |
Examples
Example 628. Reading a file line by line
<?php
$handle = @fopen("/tmp/inputfile.txt", "r");
if ($handle) {
while (!feof($handle)) {
$buffer = fgets($handle, 4096);
echo $buffer;
}
fclose($handle);
}
?>
Notes
If you are having problems with PHP not recognizing the line endings when reading files either on or created by a Macintosh computer, you might want to enable the auto_detect_line_endings run-time configuration option.
People used to the 'C' semantics of fgets()
should note the difference in how EOF is returned.