Question

我有以下示例其工作正常，但我想删除问题No1 - ，问题No2 - ，问题No3 .....立即因为我不想添加问题No2 - ，问题No3 ..每次在preg_replace。我认为这可以通过preg_replace实现。我写了下面的代码，但没有得到实际的结果。任何建议或指导将不胜感激。

$catName="Issue No1 – This is new Issue No2 – This is also new item Issue No3 – This is new one There are 1 2 3 items ....... ";
echo $catName= preg_replace("/Issue No\d+/","",$catName);

输出应为：

这是新的这也是新项目这是新项目有1 2 3项.......

Answer 1

您还必须在表达式的末尾添加-

preg_replace("/Issue No\d+ –/", "", $catName);

DEMO

Answer 2

尝试如下 -

$catName = preg_replace("(Issue No[0-9]+)", "", $catName);

Answer 3

<?php
    $catName="Issue No1 - This is new Issue No2 - This is also new item Issue No3 - This is new one There are 1 2 3 items ....... ";
    echo "<h1>$catName</h1>\n";

    $catName = preg_replace("/Issue No\d+ - /","",$catName);
    echo "<h1>$catName</h1>\n";

?>

删除具有特殊字符和数字的特定字符串

3 个答案: