字符串替换首次出现只与php中的数组中的单词

Question

$needle = array("Arr","Arr:","Arrang");
$haystack = " Arr is the proper way of Arr.";
echo str_replace($needle, "Arrangement", $haystack);

打印：Arrangement is the proper way of Arrangement

想要：Arrangement is the proper way of Arr.

Answer 1

对阵列使用preg_replace implode和分隔符。分隔符\s|充当or语句，其中包含数组创建的正则表达式模式：

$needle = array("Arr","Arr:","Arrang");
$haystack = "Arr: is the proper way of Arr.";
echo preg_replace("/".implode("\s|",$needle)."\s/", "Arrangement ", $haystack, 1);

<强>结果：

Arrangement is the proper way of Arr.

Answer 2

试试preg_replace。这里的1表示仅在第一个实例上匹配。 /string/搜索字符串。

$haystack = "Arr is the proper way of Arr.";
echo preg_replace("/Arr/", "Arrangement", $haystack, 1);