PHP替換和concat

Question

我需要替換和concat一些隨機字符串中的值，我將值存儲在一個數組中。

I.e.

$search = array('dog', 'tree', 'forest', 'grass'); 
$randomString = "A dog in a forest"; 

如果一個或多個陣列值隨機字符串相匹配的話，我需要更換這樣的：

$replacedString = "A @dog in a @forest"; 

有人能幫助我嗎？

Thx。

Answer 1

foreach (explode(' ', $randomString) as $word) { 
    $replacedString .= in_array($word, $search) ? "@$word " : "$word "; 
} 

echo $replacedString; // A @dog in a @forest 

Answer 2

這應該爲你工作：

$words = explode(" ", $randomString); 

foreach($words as $word){ 
    if(in_array($word, $search)){ 
     $word = "@$word"; 
    } 
} 

$replacedString = implode(" ", $words); 

Answer 3

foreach($search as $word) 
{ 
    $randomString = str_replace($word,"@".$word,$randomString); 
} 

Answer 4

不知道如果我明白你正確地做什麼，但看看str_replace()功能

，並嘗試一些像

foreach($search as $string) 
{ 
    $replacement[] = "@".$search; 
} 

$new_string = str_replace($search, $replacement, $randomString);