为什么我会得到下面代码的偏移量错误？

Question

<?php
    $i = 0;

    $array = array('name', 'email', 'address');
    while ($array[$i]) {
        echo "$array[$i]<br>";

        $i++;
    }
?>

PHP Notice: Undefined offset: 3 in /workspace/Main.php on line 6

Answer 1

In while loop until your array has value. use isset() for it. change your while condition as below:

<?php
    $i = 0;

    $array = array('name', 'email', 'address');
    while (isset($array[$i])) {
        echo "$array[$i]<br>";

        $i++;
    }
?>