problem with read file.

[elmo25]

hello,
here i had a problem of reading from a text file.
when i start read from the file and the problem will rewrite a new integer in and it will read it again. but when my program rewrite to 0 it will not be able to read out. while other number like 1 , 12, 4.etc can be read out.

may i know wat the problem i'm facing?
thank you.

[laserlight]

Post the smallest and simplest script that demonstrates your problem.

[elmo25]

something like this
while ($realtime!=19) //open while loop
{
$fp = fopen( "file.txt" , 'r' );
$str = fread( $fp , filesize( "file.txt" )or die("Couldn't read values to file!") );
echo "<br>str".$str;
$fp = fclose( $fp );

if ($realtime!=19) //open while loop
{
$realtime = $realtime + 1;
$fp = fopen ( "file.txt" , 'w' )or die("Couldn't open $file for writing!");
$write = fwrite( $fp , $str2 )or die("Couldn't write values to file!");
$fp = fclose( $fp);
}
else
{
$realtime =0;
$fp = fopen ( "file.txt" , 'w' )or die("Couldn't open $file for writing!");
$write = fwrite( $fp , $str2 )or die("Couldn't write values to file!");
$fp = fclose( $fp);
}

}

thanks

[rehfeld]

where does $str2 come from?