arrays - 用数组搜索并替换字符串中的单词

Question

我想扫描一段并用另一个词替换其中的针。例如

$needles = array('head', 'limbs', 'trunk');
$to_replace = "this";
$haystack = "Main parts of human body is head, Limbs and Trunk";

需要最终输出

Main part of human body is this, this and this

我该怎么做？

Answer 1

假设您使用的是 PHP，您可以尝试str_ireplace.

$needles = array('head', 'limbs', 'trunk');
$to_replace = "this";
$haystack = "Main parts of human body is head, Limbs and Trunk";
echo str_ireplace($needles, $to_replace, $haystack); // prints "Main parts of human body is this, this and this"

Answer 2

使用 preg_replace ：

$needles = array('head', 'limbs', 'trunk');
$pattern = '/' . implode('|', $needles) . '/i';
$to_replace = "this";
$haystack = "Main parts of human body is head, Limbs and Trunk";

echo preg_replace($pattern, $to_replace, $haystack);