如何從文本中提取大寫的部分？

Question

哪個php函數可以用來從字符串中提取大寫的單詞？

例如，我有：

... a large text that contains CAPITALIZED PARTS ...

，我需要以編程方式從中提取CAPITALIZED PARTS。

我已經搜索了互聯網，但還沒有找到任何解決方案。

Answer 1

可以使用\\b[A-Z]+\\b正則表達式來獲得ALLCAPS單詞，preg_match_all：

這裏是一個sample program：

<?php 
$re = "/\\b[A-Z]+\\b/"; 
$str = "a large text that contains CAPITALIZED PARTS"; 
preg_match_all($re, $str, $matches); 
foreach ($matches as $val) { 
    print_r($val); 
} 
?> 

輸出：

Array                                                             
(                                                              
    [0] => CAPITALIZED                                                         
    [1] => PARTS                                                          
)  

Answer 2

preg_match_all('/\b([A-Z]+)\b/', $str, $matches); 

Answer 3

我會用正則表達式這區分大小寫

$string='... a large text that contains CAPITALIZED PARTS ...' 
preg_match_all('%[A-Z]+%', $string, $matches); 
var_dump($matches); 

https://regex101.com/r/eB0rH5/1

Answer 4

$re = "/[A-Z]*/"; 
$str = "a large text that contains CAPITALIZED PARTS"; 
preg_match_all($re, $str, $matches); 


$newArr = array(); 
foreach($matches[0] as $mat){ 
    if(strlen($mat)>0) 
    $newArr[] = $mat; 
} 
print_r($newArr);