用索引

Question

替换字符串参数与数组值

是否有一些原生的PHP接收字符串和数组作为参数，并替换数组的索引及其在字符串内的各自的值？

喜欢的东西：

$myString = "{days} days left for {holiday}"; 
$params = array(
    "days" => 275, 
    "holiday" => "Christmas" 
); 
echo _some_function($myString, $params); 
//Outputs: "275 days left for Christmas" 

Answer 1

这应该为你工作：

（这里我只是首先在密钥的周围添加分隔符，然后用strtr()来替换这些值）

<?php 

    $myString = "{days} days left for {holiday}"; 
    $delimiters = ["{", "}"]; 
    $params = [ 
     "days" => 275, 
     "holiday" => "Christmas" 
    ]; 

    function someCrazyFunction($myString, $params, $delimiters) { 
     foreach($params as $k => $v) { 
      $params[$delimiters[0] . $k . $delimiters[1]] = $v; 
      unset($params[$k]); 
     } 

     return strtr($myString, $params); 

    } 


    echo someCrazyFunction($myString, $params, $delimiters); 

?> 

输出：

275 days left for Christmas 

Answer 2

_some_function($myString, $params){ 
    foreach($params as $k=>$v) 
     $myString = str_replace("{".$k."}",$v,$mString); 
    return $myString; 
} 

-dont问：如果 “天” 拥有财产以后像 “假日” 为价值;）

Answer 3

谢谢大家的答案。 据@ Rizier123和@superduperawesomephpexpert评论：

$myString = "{days} days left for {holiday}"; 
$params = array(
    "days" => 275, 
    "holiday" => "Christmas" 
); 

$indexes = array_map(function($v){ 
    return '{'.$v.'}'; 
}, array_keys($params)); 

echo str_replace($indexes, $params, $myString);