I know in php if you use the function filesize it will return the size of the file in bytes, but is there an easy way to get the size in MB.
Cheers (2 Replies)
How do I identify if there is any content in a file?
If there is nothing in a specified file, I'd like to send an email indicating that there is nothing to report.
Any help appreciated. (3 Replies)
I saw some stuff in the search results on this - but nothing specific.....
I have a significant number of files (c. 300) which are output from a large process that I run. These are compared with a 'baselined' set of files - so I can quickly see if there are differences based on the sizes of the... (2 Replies)
Hello everybody it's me again.
I have a procces that is writing in a 'file1' automatically but i want to truncate 'file1' to a filesize 'x' that mean if the 'file1' size is 'x' i want to delete the first lines while the last lines are being writed, that have sence?
in the process are an... (1 Reply)
Hey guys.
What I need to do is this:
I need to find files that have a certain filesize (for this case a file size of 0 (zero) )
When I find this file with a filesize of zero I need to echo a statement that tells the user to delete it and not to delete it if the filesize is greater than... (3 Replies)
I want to know if there is any unix command to view the size of the file?
eg.
i have a directory letter
in this i have file a,b,c,d,e.
i just want to know the size of file d and not any other. (3 Replies)
Hello,
I have a script that should store file size in a variable $filesize.
I don't know what is the best way to do it.
I tried
ls -lt myfile.txt | sed something >$filesize
but I don't know how to use sed to get filesize. I know that the owner of the file is root and then we have some... (6 Replies)
I am having problems with finding the filesize with this in my script:
filesize=`ls -l | awk '$5=0'`
if ; then
ls -l | awk '{print $9 " " $5}'
if ; then
echo "Would you like to delete this file? (y/n)"
if yes do this
elif no do this
fi
fi
else... (7 Replies)
Hi,
Just wondered what command you would use to list all the files on Aix by filesize?
I've tried a few but none of which seem to do the trick!
Currently running du -m -a . | sort -rn | more as root
Thanks,
Matt. (1 Reply)
Well i was trying to code some script where it was required to compare the file size..
i am using solaris 5.10
to get the filesize i used:
Filesize=`du -k temp/Final | awk '{print $1}' | sed 's/ //g'`
now i need to do
if filesize not equal to 0
then
do something
fi
i... (2 Replies)
Discussion started by: egunda
2 Replies
LEARN ABOUT PHP
fwrite
FWRITE(3) 1 FWRITE(3)fwrite - Binary-safe file writeSYNOPSIS
int fwrite (resource $handle, string $string, [int $length])
DESCRIPTION fwrite(3) writes the contents of $string to the file stream pointed to by $handle.
PARAMETERS
o $handle
-A file system pointer resource that is typically created using fopen(3).
o $string
- The string that is to be written.
o $length
- If the $length argument is given, writing will stop after $length bytes have been written or the end of $string is reached,
whichever comes first. Note that if the $length argument is given, then the magic_quotes_runtime configuration option will be
ignored and no slashes will be stripped from $string.
RETURN VALUES fwrite(3) returns the number of bytes written, or FALSE on error.
NOTES
Note
Writing to a network stream may end before the whole string is written. Return value of fwrite(3) may be checked:
<?php
function fwrite_stream($fp, $string) {
for ($written = 0; $written < strlen($string); $written += $fwrite) {
$fwrite = fwrite($fp, substr($string, $written));
if ($fwrite === false) {
return $written;
}
}
return $written;
}
?>
Note
On systems which differentiate between binary and text files (i.e. Windows) the file must be opened with 'b' included in fopen(3)
mode parameter.
Note
If $handle was fopen(3)ed in append mode, fwrite(3)s are atomic (unless the size of $string exceeds the filesystem's block size, on
some platforms, and as long as the file is on a local filesystem). That is, there is no need to flock(3) a resource before calling
fwrite(3); all of the data will be written without interruption.
Note
If writing twice to the file pointer, then the data will be appended to the end of the file content:
<?php
$fp = fopen('data.txt', 'w');
fwrite($fp, '1');
fwrite($fp, '23');
fclose($fp);
// the content of 'data.txt' is now 123 and not 23!
?>
EXAMPLES
Example #1
A simple fwrite(3) example
<?php
$filename = 'test.txt';
$somecontent = "Add this to the file
";
// Let's make sure the file exists and is writable first.
if (is_writable($filename)) {
// In our example we're opening $filename in append mode.
// The file pointer is at the bottom of the file hence
// that's where $somecontent will go when we fwrite() it.
if (!$handle = fopen($filename, 'a')) {
echo "Cannot open file ($filename)";
exit;
}
// Write $somecontent to our opened file.
if (fwrite($handle, $somecontent) === FALSE) {
echo "Cannot write to file ($filename)";
exit;
}
echo "Success, wrote ($somecontent) to file ($filename)";
fclose($handle);
} else {
echo "The file $filename is not writable";
}
?>
SEE ALSO fread(3), fopen(3), fsockopen(3), popen(3), file_get_contents(3).
PHP Documentation Group FWRITE(3)