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Posted by VS on 11/01/05 20:19
help wrote:
> I want to open a file and write some string between the the 3rd line and the
> 4th line. my code (as follows) can insert after the 3rd line but somehow it
> owerwrites the 4th line. So i lost its original content. As my original file has
> more than 10000 lines of code, I'm looking for a handy way to do that. Does
> anyone know how I can fix it? Please help me. Thanks very much.
>
>
> $content = "new content here\n"
> $handle = fopen("test.wrl", "r+"); //open file
> $theData = "";
> $i = 1;
> while($i<4){
> $theData += fgets($handle);
> $i++;
> }
> fputs($handle, $content); //write
> fclose($handle); //close it
How about something like this (untested - typed live):
function insert_line($text, $pos){
$file = "test.wrl";
$tmp = "new.wrl";
$old = fopen($file, "r"); // Open File
if ( ! $old ){
return 0;
}else{
$new = fopen($tmp, "w+"); // Create New
if( ! $new ){
return 0;
}
$l=0;
while( !feof($old) ){
$line = fgets($old, 512);
if( $l == $pos ){
fputs($new, $text);
}
fputs($new, $line);
$l++;
}
fclose($old);
fclose($new);
if( ! copy($tmp, $file) ){
return 0;
}
unlink($tmp);
return 1;
}
}
--
VS
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