continue

(PHP 4, PHP 5, PHP 7, PHP 8)

continue is used within looping structures to skip the rest of the current loop iteration and continue execution at the condition evaluation and then the beginning of the next iteration.

Зауваження: In PHP the switch statement is considered a looping structure for the purposes of continue. continue behaves like break (when no arguments are passed) but will raise a warning as this is likely to be a mistake. If a switch is inside a loop, continue 2 will continue with the next iteration of the outer loop.

continue accepts an optional numeric argument which tells it how many levels of enclosing loops it should skip to the end of. The default value is 1, thus skipping to the end of the current loop.

<?php
$arr = ['zero', 'one', 'two', 'three', 'four', 'five', 'six'];
foreach ($arr as $key => $value) {
    if (0 === ($key % 2)) { // skip members with even key
        continue;
    }
    echo $value . "\n";
}
?>

Подані вище приклади виведуть:

one
three
five

<?php
$i = 0;
while ($i++ < 5) {
    echo "Outer\n";
    while (1) {
        echo "Middle\n";
        while (1) {
            echo "Inner\n";
            continue 3;
        }
        echo "This never gets output.\n";
    }
    echo "Neither does this.\n";
}
?>

Подані вище приклади виведуть:

Outer
Middle
Inner
Outer
Middle
Inner
Outer
Middle
Inner
Outer
Middle
Inner
Outer
Middle
Inner

Omitting the semicolon after continue can lead to confusion. Here's an example of what you shouldn't do.

<?php
for ($i = 0; $i < 5; ++$i) {
    if ($i == 2)
        continue
    print "$i\n";
}
?>

One can expect the result to be:

Changelog for continue

Версія Опис

7.3.0 continue within a switch that is attempting to act like a break statement for the switch will trigger an E_WARNING.