PHP爆炸大写单词

Question

我是如何在PHP大写单词中爆炸的？ 像：

$text = "HELLO world FROM BRAZIL";
$up = explode(' ',$text);
($up[0] = HELLO, $up[1] = world, $up[2] = FROM BRAZIL)

由于

Answer 1

您需要将字符串作为一个整体进行爆炸，然后循环遍历数组并使用ctype_upper()进行测试。

EXAMPLE

$text = "HELLO world FROM BRAZIL";
$up = explode(' ',$text);

foreach($up AS $value){
    if (ctype_upper($value)) {
        echo $value;
    }
}

Answer 2

不要使用explode()，请尝试preg_split()：

$up = preg_split('/\s([^A-Z]+)/', $text, -1, PREG_SPLIT_DELIM_CAPTURE);

Debuggex Demo

Answer 3

$str = "ThisIsA STRING"
echo preg_replace('/([a-z])([A-Z])/','$1 $2', $str)
This Is A STRING