Brian Brian - 5 months ago 27
PHP Question

string replace in a large file with php

I am trying to do a string replace for entire file in PHP. My file is over 100MB so I have to go line by line and can not use

file_get_contents()
. Is there a good solution to this?

Answer

If you aren't required to use PHP, I would highly recommend performing stuff like this from the command line. It's byfar the best tool for the job, and much easier to use.

In any case, the sed command is what you are looking for:

sed s/search/replace oldfilename > newfilename

If you need case-insensitivity:

sed -i s/search/replace oldfilename > newfilename

If you need this to perform dynamically within PHP, you can use passthru():

$output = passthru("sed s/$search/$replace $oldfilename > $newfilename");
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