Echo result goes in loop

Question

I have a html search box that uses the script below, but it seems like the echo output goes in a loop or shows all results from the .txt file that you can see I am using fopen for. I tried to add exit at the end of the echo's but then it was only able to get the first line in content.txt no matter what I searched for using the search box. I am trying to have it only show the result of what being searched for.

Here is the code I've been working on:

<?php
$q = $_REQUEST["q"];
$f = fopen("content.txt", "r");
while (($line = fgets($f)) !== FALSE) {

    if (strstr($line, $q)) {
        echo "<li>Found $line</li>";
    } else {
        echo "<p>Nothing found.</p>";
    }

}

?>

@akshaykhale Hmm, I just tested that. It seems like it's only able to get the result for the first line in the txt file. — Martin, Mar 25 '16 at 05:01
Check the answers. At least one of them would answer your question. If they do not work. add the error you are getting in the comment below each answer. — Mawia HL, Mar 25 '16 at 05:25

score 0 · Accepted Answer · answered Mar 25 '16 at 05:05

Try like this

<?php
    $q = $_REQUEST["q"];
    $f = fopen("test.txt", "r");
    $found = false;
    while (($line = fgets($f)) !== FALSE) {
        if (strstr($line, $q)) {
            echo "<li>Found $line</li>";
            $found = true;
        }
    }
    if (!$found){
        echo "<p>Nothing found.</p>";
    }
?>

score 0 · Answer 2 · edited May 23 '17 at 12:15

0

PHP has a built in function for pattern searching. You might find an answer here. PHP to search within txt file and echo the whole line

edited May 23 '17 at 12:15

Community

1
1

answered Mar 25 '16 at 05:08

srccode

721
4
16

score 0 · Answer 3 · answered Mar 25 '16 at 05:23

Since you are trying to get all the result found in the text file create a blank string and concat it in the loop if result is there echo the result else the no result found.

<?php
$str='';
$q = $_REQUEST["q"];
$f = fopen("content.txt", "r");
while (($line = fgets($f)) !== FALSE) {

    if (strstr($line, $q)) {
        $str.="<li>Found $line</li>";
    }

}
if($str==''){
    echo "<p>Nothing found.</p>";
}else {
   echo $str;
}

?>

Echo result goes in loop

3 Answers3