How to use Break and Continue in PHP?

[NIcaBoy]

Hi friends,
I have just started doing the PHP programming language. I am confused with some constructs of the control structure. I want to know more about the break and continue. I have used the break statement in C program but I don't know how to use it in PHP.!! So please tell me how to use Break and Continue in PHP? Any other information would be most welcomed.!!

[MELTRONICS]

The break statement exits a structure for, foreach, while, do-while or switch. Before using the break or the continue, you should have a good knowledge about the constructs and the loops that are used in PHP. The break accepts an optional numeric argument which tells it how many nested structures have been disrupted. The continue and break are used within PHP loops to skip iterations and exit the loops respectively. To make it very clear, if you use "break" with no numerical argument, that's the same as doing "break 1". "break 0", while allowed, does nothing.

[Viensterrr]

The continue statement is used in a loop to avoid the instructions of the current iteration and continue execution at the condition evaluation and then to begin the next iteration. You should keep in mind that in PHP, structure switch is considered a loop continues. 'continue' accepts an optional numeric argument which tells it how many nested structures were ignored. 0 continues, and continues 1, are identical to continuous. The switch statement is equivalent to a series of if statements. On many occasions you will need to compare the same variable or an expressions with many different values, and execute different parts of code depending on which value it equals.

[void]

I have provided you with an example in which I have used a break statement. Just have a look, so that you can get an idea how to use it :

<?php
$arr = array('one', 'two', 'three', 'four', 'stop', 'five');
while (list(, $val) = each($arr)) {
    if ($val == 'stop') {
        break;
    }
    echo "$val<br />\n";
}
 
$i = 0;
while (++$i) {
    switch ($i) {
    case 6:
        echo "At 5<br />\n";
        break 1; 
    case 10:
        echo "At 10; quitting<br />\n";
        break 2;
    default:
        break;
    }
}
?>

[CodGuru]

In the following example provided by me, you will understand how to use a continue in coding :

<?php
while (list($key, $value) = each($arr)) {
    if (!($key % 2)) { 
        continue;
    }
    do_something_odd($value);
}
 
$i = 0;
while ($i++ < 5) {
    echo "Outer<br />\n";
    while (1) {
        echo "&nbsp;&nbsp;Middle<br />\n";
        while (1) {
            echo "&nbsp;&nbsp;Inner<br />\n";
            continue 3;
        }
        echo "This never gets output.<br />\n";
    }
    echo "Neither does this.<br />\n";
}
?>

[Zecho]

The following is an example regarding the condition at the end of the loop and continue :

<?php 
$i = 0;
do {
    printf('%d ', $i);
    continue;
} while( ++$i < 10);
?>

The output of the above example would be :

Output: 0 1 2 3 4 5 6 7 8 9

It gets executed all the time regardless that continue is placed before the while() statement. That does not get skipped.