PHP break Statement

Last update on May 28 2022 12:23:07 (UTC/GMT +8 hours)

Description

Sometimes a situation arises where we want to exit from a loop immediately without waiting to get back to the conditional statement.

The keyword break ends execution of the current for, foreach, while, do while or switch structure. When the keyword break executed inside a loop the control automatically passes to the first statement outside the loop. A break is usually associated with the if.

Example:

In the following example we test the value of $sum, if it is greater than 1500 the break statement terminate the execution of the code. As the echo statement is the first statement outside loop it will print the current value of $sum.

<?php
$array1=array(100, 1100, 200, 400, 900);
$x1=0;
$sum=0
while ($x1<=4)
{
if ($sum>1500)
{
break;
}
$sum = $sum+$array1[$x1];
$x1=$x1+1;
}
echo $sum;
?>

Output:

View the example in the browser

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PHP: Tips of the Day

How to Sort Multi-dimensional Array by Value?

Try a usort, If you are still on PHP 5.2 or earlier, you'll have to define a sorting function first:

Example:

function sortByOrder($a, $b) {
    return $a['order'] - $b['order'];
}

usort($myArray, 'sortByOrder');

Starting in PHP 5.3, you can use an anonymous function:

usort($myArray, function($a, $b) {
    return $a['order'] - $b['order'];
});

And finally with PHP 7 you can use the spaceship operator:

usort($myArray, function($a, $b) {
    return $a['order'] <=> $b['order'];
});

To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first is zero - best explained below. You can also use this for sorting on sub-elements.

usort($myArray, function($a, $b) {
    $retval = $a['order'] <=> $b['order'];
    if ($retval == 0) {
        $retval = $a['suborder'] <=> $b['suborder'];
        if ($retval == 0) {
            $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder'];
        }
    }
    return $retval;
});

If you need to retain key associations, use uasort() - see comparison of array sorting functions in the manual

Ref : https://bit.ly/3i77vCC