Question

Is there an equivalent to PERL’s TIE in php? I’d like to see if a string(single word) is in a file where each line is a single word/string. If it is, I’d like to remove the entry. This would be very easy to do in Perl but unsure how I would do this in PHP.

Answer 1

Depending on how you read the file will determine how you remove the entry.

Using fgets:

$filtered = "";
$handle = fopen("/file.txt", "r");

if ($handle) {
    // Read file line-by-line
    while (($buffer = fgets($handle)) !== false) {
        if (strpos($buffer, "replaceMe") === false)
            $filtered .= $buffer;
    }
}

fclose($handle);

Using file_get_contents:

filterArray($value){
    return (strpos($value) === false);
}

// Read file into a string
$string   = file_get_contents('input.txt');
$array    = explode("\n", $string);
$filtered = array_filter($array, "filterArray");

Using file:

function filterArray($value){
    return (strpos($value) === false);
}

// Read file into array (each line as an element)
$array    = file('input.txt', FILE_IGNORE_NEW_LINES);
$filtered = array_filter($array, "filterArray");

Note: Each method assumes that you want to remove the entire entry if it contains a single word.