change text in middle file

[jartse]

how i change text in file
example:

text1.txt
**********************
jack
robin
john
michael
jenny
**********************

How i change john to joe. So i have to search john
then change it to joe and write it file text1.txt
and all other not change

 

[drgenius]

The easiest way would be to read the date into an array using the file() function. Then find the row containing 'john' and change it 'joe. Finally write the array back. Only drawback would be that for extremely large files you might run into memory problems when trying to read all the entries to memory. But then again, if you're files really are growing out of proportions I would strongly recommend the use of a database system like MySQL. It's not a lie if YOU believe it ;-)

 

[Guest_imported]

try this:

$mefile = fopen("file.txt","r"
$readin = fread($mefile,filesize("file.txt&quot);
fclose($mefile);

$mefile = fopen("file.txt","w"
for($i=0;$i<count($readin);$i++)
{
if($readin[$i] == &quot;john&quot
{
$readin[$i] = &quot;joe&quot;;
}
fwrite(&quot;$readin[$i]\n&quot;
}
fclose($mefile);

basically, you've pulled the info out of the file, searched throughthe array element by element and found the one u want, replaced it with the string u wanted, and then over-writtern the original file with the old elements, and the new one, in order.
cheers
Siberd
mail: siberdude@ntlworld.com
ICQ: 44167565

 

[gerrygerry]

Well, i dunno exactly what you are looking for, but from your example it looks like you just want to change &quot;Joh&quot; to &quot;Joe&quot;, right?

Check out the str_replace() function! It is very fast ;-)

I hope I was able to help! -gerrygerry
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