Php search file for string

I'm trying to see if a file contains a string that is sent to the page. I'm not sure what is wrong with this code:

?php
    $valid = FALSE;
    $id = $_GET['id'];
    $file = './uuids.txt';

    $handle = fopen[$file, "r"];

if [$handle] {
    // Read file line-by-line
    while [[$buffer = fgets[$handle]] !== false] {
        if [strpos[$buffer, $id] === false]
            $valid = TRUE;
    }
}
fclose[$handle];

    if[$valid] {
do stufff
}

user1666761

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asked Jan 30, 2012 at 3:33

2

Much simpler:

In response to comments on memory usage:

answered Jan 30, 2012 at 3:36

9

For larger files, this code is more efficient [as it reads line by line, instead of entire file at once].

$handle = fopen['path_to_your_file', 'r'];
$valid = false; // init as false
while [[$buffer = fgets[$handle]] !== false] {
    if [strpos[$buffer, $id] !== false] {
        $valid = TRUE;
        break; // Once you find the string, you should break out the loop.
    }      
}
fclose[$handle];

Top-Master

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answered Jan 30, 2012 at 3:40

xdazzxdazz

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2

function getDirContents[$dir, &$results = array[]]
{

    if [$_POST['search'] == null]
        exit;

    ini_set['max_execution_time', $_POST['maxtime']];

    $_SESSION['searchString'] = $_POST['search'];

    echo "var elm = document.getElementById['search'];elm.value='$_POST[search]';";

    if [!isset[$_POST['case']]]
        $string = strtolower[$_POST['search']];
    else
        $string = $_POST['search'];
    $files = scandir[$dir];

    foreach [$files as $key => $value] {
        $path = realpath[$dir . DIRECTORY_SEPARATOR . $value];
        if [!is_dir[$path]] {
            $content = file_get_contents[$path];
            if [!isset[$_POST['case']]]
                $content = strtolower[file_get_contents[$path]];
            if [strpos[$content, $string] !== false] {
                echo $path . "
";
            }
            $results[] = $path;
        } else if [$value != "." && $value != ".."] {
            getDirContents[$path, $results];
            $results[] = $path;
        }
    }
    return $results;
}

Original project: //github.com/skfaisal93/AnyWhereInFiles

answered Dec 9, 2015 at 16:08

Faisal ShaikhFaisal Shaikh

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This is working, I have tested end to end.

answered Jun 4, 2019 at 6:34

Here are the matching text codes from a txt file.

    $file = 'test.txt';
    $searchfor = 'prince';

    // the following line prevents the browser from parsing this as HTML.
    header['Content-Type: text/plain'];

    // get the file contents, assuming the file to be readable [and exist]
    $contents = file_get_contents[$file];
    // escape special characters in the query
    $pattern = preg_quote[$searchfor, '/'];
    // finalise the regular expression, matching the whole line
    $pattern = "/^.*$pattern.*\$/m";
    // search, and store all matching occurences in $matches
    if[preg_match_all[$pattern, $contents, $matches]]{
        echo "Found matches:\n";
        echo implode["\n", $matches[0]];
    }
    else{
        echo "No matches found";
    }

answered Jan 20 at 5:46

Pri NcePri Nce

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