php - 从字符串中删除不必要的单词

Question

我想从字符串中删除一些单词，以使我的图像 alt 标记更相关。

问题是，如果我有这样的阶段:

barack obama at a restaurant in venice

我希望导出是:

barack obama restaurant venice

但我拥有的是:

barack obamaa restaurantvenice

代码:-

$a = array( ' at ', ' in ', ' arriving ', ' a ', ' leaving ', ' walks ', ' walking ', ' her ' );
$str = 'barack obama at a restaurant in venice';
echo str_replace($a,"",$str);

如果我使用数组中没有空格的单词，结果会非常可怕:

brck obm resturnt venice

有什么想法吗？

Answer 1

您必须在""内添加一个空格，如下所示:-

echo str_replace($a," ",$str);

检查这里:-

<?php

$a = array( ' at ', ' in ', ' arriving ', ' a ', ' leaving ', ' walks ', ' walking ', ' her ' );
$str = 'barack obama at a restaurant in venice';
echo str_replace($a," ",$str);

输出:- https://eval.in/636890