Online PHP editor | perf for NQP9M

@ 2026-02-07T04:13:56Z

<!DOCTYPE html>
<html>
<head>
    <title>Palindrome Number Checker</title>
</head>
<body>

<form method="post">
    Enter a number: <input type="number" name="n"><br><br>
    <input type="submit" name="check">
</form>

<?php
if (isset($_POST['check'])) {
    $n = $_POST['n'];
    $num = $n;
    $rev = 0;

    while ($num > 0) {
        $rev = $rev * 10 + ($num % 10); // build reversed number
        $num = (int)($num / 10);        // remove last digit
    }

    if ($rev == $n) {
        echo $n . " is a Palindrome number";
    } else {
        echo $n . " is not a Palindrome number";
    }
}
?>

</body>
</html>
<!DOCTYPE html>
<html>
<head>
    <title>Palindrome Number Checker</title>
</head>
<body>

<form method="post">
    Enter a number: <input type="number" name="n"><br><br>
    <input type="submit" name="check">
</form>

<?php
if (isset($_POST['check'])) {
    $n = $_POST['n'];
    $num = $n;
    $rev = 0;

    while ($num > 0) {
        $rev = $rev * 10 + ($num % 10); // build reversed number
        $num = (int)($num / 10);        // remove last digit
    }

    if ($rev == $n) {
        echo $n . " is a Palindrome number";
    } else {
        echo $n . " is not a Palindrome number";
    }
}
?>

</body>
</html>

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
8.5.3	0.007	0.011	19.46
8.5.2	0.022	0.016	16.60
8.5.1	0.043	0.008	16.56
8.5.0	0.034	0.008	16.62
8.4.18	0.013	0.011	19.61
8.4.17	0.039	0.010	19.29
8.4.16	0.030	0.012	19.50
8.4.15	0.032	0.010	19.52
8.4.14	0.034	0.011	17.26
8.4.13	0.034	0.009	17.64
8.4.12	0.039	0.008	17.50
8.4.11	0.034	0.013	17.63
8.4.10	0.039	0.014	17.54
8.4.9	0.037	0.009	17.66
8.4.8	0.037	0.010	17.84
8.4.7	0.039	0.007	17.75
8.4.6	0.044	0.005	17.69
8.4.5	0.039	0.008	17.63
8.4.4	0.035	0.007	17.47
8.4.3	0.037	0.009	17.38
8.4.2	0.043	0.009	17.32
8.4.1	0.036	0.012	17.25
8.3.30	0.032	0.010	18.31
8.3.29	0.035	0.008	18.14
8.3.28	0.040	0.009	18.32
8.3.27	0.044	0.007	16.63
8.3.26	0.036	0.008	16.72
8.3.25	0.036	0.007	16.67
8.3.24	0.032	0.012	16.75
8.3.23	0.035	0.012	16.57
8.3.22	0.035	0.010	16.61
8.3.21	0.039	0.006	16.64
8.3.20	0.037	0.009	16.54
8.3.19	0.036	0.009	16.70
8.3.18	0.034	0.013	16.45
8.3.17	0.045	0.009	16.46
8.3.16	0.036	0.012	16.27
8.3.15	0.040	0.007	16.45
8.3.14	0.038	0.008	16.21
8.3.13	0.032	0.010	16.46
8.3.12	0.036	0.006	16.60
8.3.11	0.038	0.007	16.30
8.3.10	0.040	0.009	16.54
8.3.9	0.037	0.010	16.41
8.3.8	0.042	0.007	16.35
8.3.7	0.040	0.006	16.20
8.3.6	0.038	0.010	16.35
8.3.5	0.036	0.013	16.34
8.3.4	0.042	0.009	17.78
8.3.3	0.038	0.007	17.78
8.3.2	0.032	0.005	17.77
8.3.1	0.029	0.009	17.97
8.3.0	0.027	0.008	17.86

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