It truncates a file to a given length
Example
<?php
$fp = fopen(“test.txt”, “r”);
ftruncate($fp,5);
?>
Tag Archives: Functions
ftell
It returns the current position of the file pointer
Example
<?php
$fp = fopen(“test.txt”, “r”);
$data = fgets($fp, 5);
echo ftell($fp);
?>
Output
4
fstat
It returns information about a file using an open file pointer
Example
<?php
$fp = fopen(‘test.txt’, ‘r’);
$stats = fstat($fp);
echo “<pre>”;
print_r($stats);
?>
Output
Array
(
[0] => 2049
[1] => 673768
[2] => 33279
[3] => 1
[4] => 1000
[5] => 1000
[6] => 0
[7] => 8
[8] => 1336732795
[9] => 1336732794
[10] => 1336732794
[11] => 4096
[12] => 8
[dev] => 2049
[ino] => 673768
[mode] => 33279
[nlink] => 1
[uid] => 1000
[gid] => 1000
[rdev] => 0
[size] => 8
[atime] => 1336732795
[mtime] => 1336732794
[ctime] => 1336732794
[blksize] => 4096
[blocks] => 8
)
fseek
It seeks on a file pointer
Example
<?php
$fp = fopen(‘test.txt’, ‘r’);
$data = fgets($fp, 2048);
fseek($fp, 0);
?>
fscanf
It parses input from a file according to a format
Example
<?php
$fp = fopen(“test.txt”, “r”);
while ($data = fscanf($fp, “%tn%sn”)) {
list ($name, $profession, $countrycode) = $data;
}
fclose($fp);
?>
fread
It can be used to read the content from a file
Example
<?php
$fp = fopen(‘test.txt’, ‘r+’);
echo fread($fp,filesize(“test.txt”));
fclose($fp);
?>
glob
It finds pathnames matching a pattern
Example
<?php
foreach (glob(“*.txt”) as $file) {
echo $file;
}
?>
fputs
Its an alias of fwrite() and writes to a file
Example
<?php
$fp = fopen(‘test.txt’, ‘w’);
fputs($fp, “phpcodez”);
fclose($fp);
?>
fputcsv
It format line as CSV and write to file pointer
Example
<?php
$data = array ( array(‘php’, ‘asp’, ‘jsp’, ‘js’));
$fp = fopen(‘test.csv’, ‘w’);
foreach ($data as $value) {
fputcsv($fp, $value);
}
fclose($fp);
?>
fpassthru
The fpassthru() function reads all data from the current position in an open file, until EOF, and writes the result to the output buffer.
This function returns the number of characters passed or FALSE on failure.
Example
<?php
$fp = @fopen(“test.txt”, “r”);
fpassthru($fp);
?>