How to use break in PHP loop

In PHP, break is used to terminate a loop immediately, and program control resumes at the next statement after the loop.

Example 1: Given an array, the task is to run a loop and display all the values ​​in the array and terminate the loop when 5 is encountered.

Code example:

<?php 
// PHP break
  
// 声明一个数组并初始化
$array = array( 1, 2, 3, 4, 5, 6, 7 ); 
  
//使用foreach循环
foreach ($array as $a) { 
    if ($a == 5) 
        break; 
    else
        echo $a . " "; 
} 
echo "<br>"; 
echo "循环终止"; 
?>

Output:

1 2 3 4 
循环终止

Example 2: Given a nested loop, in PHP we can also use break to terminate Two loops. The program below contains a nested loop and terminates it using break statement.

For example, two arrays arr1 and arr2 are given, and the task is to display all the values ​​of arr2 for each value of arr1 until the value of arr1 is not equal to arr2. If the value in arr1 is equal to the value of arr2, use break 2 to terminate both loops and execute other statements.

Code example:

<?php 
// PHP break
  
// 声明两个数组并初始化
$arr1 = array( &#39;A&#39;, &#39;B&#39;, &#39;C&#39; ); 
$arr2 = array( &#39;C&#39;, &#39;A&#39;, &#39;B&#39;, &#39;D&#39; ); 
  
// 使用foreach循环
foreach ($arr1 as $a) { 
    echo "$a "; 
      
    // 嵌套循环
    foreach ($arr2 as $b) { 
        if ($a != $b ) 
            echo "$b "; 
        else
            break 2;  
    } 
    echo "<br>"; 
} 
  
echo "<br>循环终止"; 
?>

Output:

A C 
循环终止

This article is an introduction to the use of the break keyword in PHP loops. I hope it will be helpful to friends in need!

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