File Mainpulation

[sjparkes]

Hi all,

although I am not completely new to php - I have not done much work with file maniupulation;

What I want to do - is have a user upload a file (i know how to do this). I then wish to parse the file removing ALL lines that don't contain certain words (this is what I don't know how to do!).

What is the best way to achieve this? and how for example, if there was a list of 15 words, should I store these? in an array? so when comparing a word to the contents of the line just itterate through the array - then move onto the next line?

The format of these files will either be UNICODE or Plain Text

All ideas greatfuly recieved.

Steven

[Damien_Buttler]

The following code is a simple example. It opens the source file, reads line by line and eregi checks if words 'word1' and 'word2' exist. If so, will not put the lines into the destination file. Not sure if it is the best way but does work with limited punctuation for the words.

$file1 = fopen("textfile.txt", "r"); // original file
$file2 = fopen("newfile.txt", "w"); // new modified file

while(!feof($file1)) {
$line = fgets($file1, 1024);
if(!eregi("word1", $line) and !ereg("word2", $line)) {
fputs($file2, $line);
}
}

[sjparkes]

Doh!

Great - thanks for the snippet Damien - it has given me the idea now!

Unfortunately there is a list of about 40 words that I need to list so I will have to use an array of some kind, but your code has given me the principle now - so it "should" be a piece of cake.

Steven