How can PHP be used to search for specific text within a file and output the matching lines?

To search for specific text within a file and output the matching lines using PHP, you can read the file line by line and use the `strpos()` function to check if the desired text is present in each line. If a match is found, you can then output that line. 

<?php
$filename = 'example.txt';
$searchText = 'specific text';

$handle = fopen($filename, "r");
if ($handle) {
    while (($line = fgets($handle)) !== false) {
        if (strpos($line, $searchText) !== false) {
            echo $line;
        }
    }

    fclose($handle);
} else {
    echo "Error opening the file.";
}
?>

Keywords

PHP file handling text search regular expressions output manipulation

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