plz help

[Craziest]

am trying to use the preg_match .. but it seems no working ... wt am tryin to do is to pass a variable then do search on wtever has been inserted... i wanted preg_match to look and match the inserted text through a file ...
the files name:
form.php
searching.php
data.txt
============
[code]
//searching.php
<?php


$search=$_POST["search"];  // from form.php


$lines = file('data.txt');
foreach ($lines as $line_num => $line) {

  if (preg_match('/('.$search.')/i', $line)) {
    //echo "<br> Line ", $line_num, " matches: ",$matches[0],"<br>";
    echo $line;
  }
}

?>
[/code]
lets say i inserted the word "php".... so the code is supposed to match the word "php" and print it in each line ....but it doesnt work and it shows the whole file lines
any help would be appreciated 

[Demonic]

Why dont you do it threw MySQL way easier then you can just do:

$search = $_POST['search'];

$submit = $_POST['submit'];

if(isset($submit)){

$results = mysql_query("SELECT * FROM data WHERE data_info LIKE '%$search%' ") or die(mysql_error());
while($show_results = mysql_fetch_array($results)){
echo $show_results[info];

[Craziest]

Thank you  Demonic ...
but i want it in that way ...
any suggestions

[HuggieBear]

Your code works fine for me...

Using this:
[code]<?php
$search="php";  // I've hard coded
$lines = file('data.txt');
foreach ($lines as $line_num => $line) {

  if (preg_match('/('.$search.')/i', $line)) {
    //echo "<br> Line ", $line_num, " matches: ",$matches[0],"<br>";
    echo "$line<br>\n";
  }
}
?>[/code]

And a data file that looks like this:
[code]
This is a test
I like programming in php
I love php
CGI isn't easy
PHP rocks
Perl is better
[/code]

I get the following output:
[code]
I like programming in php
I love php
PHP rocks
[/code]

Regards
Huggie