PHP爆炸大写单词

Question

我如何爆炸PHP大写单词？ 像：

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

感谢

Answer 1

不要使用explode()，尝试preg_split()：

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

Debuggex Demo

Answer 2

您需要爆炸字符串作为一个整体，然后通过数组和测试与ctype_upper()循环。

EXAMPLE

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

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

Answer 3

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