php 在同一个字符串上多次使用 str_replace

Using str_replace multiple times on the same string

提问by stepquick

I'm looping through a title from a table so it's essentially something along these lines.

我正在遍历表格中的标题，因此它基本上是沿着这些路线的。

foreach($c as $row){
    echo string_shorten($row['title']);
}

What I'm doing is trying is a switch statement that would switch between what I want it to search for and once it's found replace it with what I choose in the str_replace:

我正在尝试的是一个 switch 语句，它可以在我想要它搜索的内容之间切换，一旦找到，就用我在 str_replace 中选择的内容替换它：

function string_shorten($text){
    switch(strpos($text, $pos) !== false){
         case "Hi":
              return str_replace('Hi','Hello', $text);
         break;
    }
}

Any suggestions or possible alternatives would be appreciated. It feels like I'm really close but not quite.

任何建议或可能的替代方案将不胜感激。感觉就像我真的很接近但又不完全。

回答by kero

As you can read in the manual for str_replace()

正如您可以在手册中阅读的那样str_replace()

mixed str_replace( mixed $search, mixed $replace, mixed $subject[, int &$count] )

混合str_replace（混合$search，混合$replace，混合$subject[，int &$count]）

as well as this example

以及这个例子

// Provides: You should eat pizza, beer, and ice cream every day
$phrase  = "You should eat fruits, vegetables, and fiber every day.";
$healthy = array("fruits", "vegetables", "fiber");
$yummy   = array("pizza", "beer", "ice cream");

$newphrase = str_replace($healthy, $yummy, $phrase);

// Provides: You should eat pizza, beer, and ice cream every day
$phrase  = "You should eat fruits, vegetables, and fiber every day.";
$healthy = array("fruits", "vegetables", "fiber");
$yummy   = array("pizza", "beer", "ice cream");

$newphrase = str_replace($healthy, $yummy, $phrase);

This means that you could use something like the following

这意味着您可以使用以下内容

$search = array('Hi', 'Heyo', 'etc.');
$replace = array('Hello', 'Hello', '');
$str = str_replace($search, $replace, $str);