How does the "break 2;" command differ from just "break;" in PHP loops?

The "break;" command in PHP loops is used to exit the current loop. When you use "break 2;", it will exit two levels of nested loops, rather than just the current loop. This can be useful when you have nested loops and you want to break out of multiple levels at once. Example: 

```php
for ($i = 0; $i < 3; $i++) {
    for ($j = 0; $j < 3; $j++) {
        echo "($i, $j) ";
        if ($j == 1) {
            break 2; // exit both loops when $j is 1
        }
    }
}
```

In this example, the inner loop will break when `$j` is equal to 1, and the `break 2;` command will exit both the inner and outer loops simultaneously.

Keywords

break 2 PHP loops control flow programming syntax

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