从preg_split结果数组中删除空项

Question

我正在尝试清除" "，,，.，?，!字符串，但结果数组包含空元素。< / p>

我的代码：

$mesaj = "Ana are mere, dar nu are si nuci? Matei are nuci!";
$keywords = preg_split("/[\s,.?!]+/", $mesaj);
print_r($keywords);

输出如下：

Array (
    [0] => Ana
    [1] => are
    [2] => mere
    [3] => dar
    [4] => nu 
    [5] => are
    [6] => si
    [7] => nuci
    [8] => Matei
    [9] => are
    [10] => nuci
    [11] => 
)

我想从上面的数组中删除空元素。怎么办呢？

Answer 1

使用PREG_SPLIT_NO_EMPTY标志：

$keywords = preg_split("/[\s,.?!]+/", $mesaj, -1, PREG_SPLIT_NO_EMPTY);

上述语句中的-1用于启用标志。有关详细信息，请参阅documentation for preg_split()。

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