利用php的explode函式將字串按分隔符(比如空格)分拆並組裝在陣列中-----要考慮連續空格問題
阿新 • • 發佈:2019-02-15
看php:
<?php
$str = "Hello world. I love php!";
$arr = explode(" ", $str);
print_r($arr);
?>
結果:
Array
(
[0] => Hello
[1] => world.
[2] => I
[3] => love
[4] => php!
)
但當空格較多時候, 就有問題了, 如下:
結果:<?php $str = "Hello world. I love php!"; $arr = explode(" ", $str); print_r($arr); ?>
Array
(
[0] => Hello
[1] =>
[2] =>
[3] =>
[4] =>
[5] => world.
[6] =>
[7] =>
[8] =>
[9] => I
[10] => love
[11] =>
[12] =>
[13] => php!
)
這顯然不是期望的結果, 其中有太多空元素了。 應該改為:
結果為:<?php $str = "Hello world. I love php!"; $arr = explode(" ", $str); $arr = array_filter($arr); // 刪除空元素 print_r($arr); foreach($arr as $value) { $newArr[] = $value; } print_r($newArr); ?>
Array
(
[0] => Hello
[5] => world.
[9] => I
[10] => love
[13] => php!
)
Array
(
[0] => Hello
[1] => world.
[2] => I
[3] => love
[4] => php!
)
方法多多, 如上僅為一種。