Are there any best practices or recommended approaches for searching text files using PHP?

Searching text files using PHP can be done efficiently by reading the file line by line and using regular expressions to match the desired text. It is recommended to use the `file()` function to read the file into an array of lines, then loop through each line to search for the text using `preg_match()` function. Additionally, it's important to handle file opening and closing properly to ensure efficient memory usage. 

$file = 'example.txt';
$searchTerm = 'keyword';

$lines = file($file);

foreach ($lines as $lineNumber => $line) {
    if (preg_match('/' . $searchTerm . '/', $line)) {
        echo "Found '$searchTerm' in line $lineNumber: $line";
    }
}

Keywords

file_get_contents strpos preg_match fopen file_exists

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