preg_replace 之间的东西而不删除的东西

Question

我要做的是：

function replace_between_something($betweenWhat,$replace_thing,$target){
return preg_replace("/".$betweenWhat."(.*?)".$betweenWhat."/",$replace_thing,$target);
}
$string="Hi, *my* name is 'Soul' and she is 'Maggie'. ";

$replace=replace_between_something("\*","your",$string);
$replace=replace_between_something("'","noname",$replace);

echo $replace;

预期的输出是：

Hi, *your* name is 'noname' and she is 'noname'.

但是，真正的输出（不是预期的）：

Hi, your name is noname and she is noname.

符号怎么保存？？

谁能帮帮我？？？

抱歉，我只是编辑我的问题以显示我想要做的实际事情。

Answer 1

您可以在替换字符串中再次包含引号：

$string="Hi, my name is 'Soul' and she is 'Maggie'. ";
$replace=preg_replace("/'(.*?)'/","'noname'",$string);
echo $replace;

Answer 2

您只需要使用preg_quote 来转义诸如 as 之类的字符

function replace_between_something($betweenWhat, $replace_thing, $target) {
    return preg_replace("/" . preg_quote($betweenWhat) . "(.*?)" . preg_quote($betweenWhat) . "/", $betweenWhat.$replace_thing.$betweenWhat, $target);
}

$string = "Hi, *my* name is 'Soul' and she is 'Maggie'. ";

$replace = replace_between_something("*", "your", $string) . "\n";
$replace = replace_between_something("'", "noname", $replace);

echo $replace;

特殊的正则表达式字符为：. \ + * ? [ ^ ] $ ( ) { } = ! < > | : -

分隔符 如果指定了可选的分隔符，它也会被转义。这对于转义 PCRE 函数所需的分隔符很有用。 / 是最常用的分隔符。

所以你不需要 ---> \* 那个反斜杠来转义，因为 preg_quote 本身就转义了这些字符

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