How to check if an array is not empty in PHP?

In PHP, you can use the empty() function to check if an array is empty. If the array is empty, the empty() function will return true, otherwise it will return false.示例如下：

$array = array(1, 2, 3);

if (!empty($array)) {
    echo "数组不为空";
} else {
    echo "数组为空";
}

In the above example, if the array $array is not empty, then output “array is not empty”; otherwise, output “array is empty”.

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