在PHP中从字符串的开头删除“a”，“an”和“the”的最佳方法是什么？

问题描述：

I'm creating a way to filter a set of blog posts by the first letter of the title. The only trouble is that I, of course, want to remove 'A ', 'An ' and 'The ' from the beginning of the titles before I select them by letter. Here's what I'm doing now:

$title = strtolower( $_POST['post_title'] );
$title = substr($title, 0, 2) == 'a ' ? substr($title, 2) : $title;
$title = substr($title, 0, 3) == 'an ' ? substr($title, 3) : $title;
$title = substr($title, 0, 4) == 'the ' ? substr($title, 4) : $title;

That works fine, but it seems pretty clunky. Is there a better way to go about it?

我正在创建一种通过标题的第一个字母过滤一组博客文章的方法。唯一的麻烦是我当然要在标题开头之前从标题的开头删除“A”，“An”和“The”。这就是我现在正在做的事情： p>

  $ title = strtolower（$ _POST ['post_title']）; 
 $ title = substr（$ title，0,2）  =='a'？  substr（$ title，2）：$ title; 
 $ title = substr（$ title，0,3）=='an'？  substr（$ title，3）：$ title; 
 $ title = substr（$ title，0,4）=='the'？  substr（$ title，4）：$ title; 
  code>  pre> 
 
 这很好用，但看起来很笨重。 有没有更好的方法呢？ p> 
  div>

答

You can do this kind of thing pretty robustly with str_replace:

$title = "A is what this title starts with";
$splitTitle = explode(" ", $title);
$blacklist = array("an","a","the");
$splitTitle[0] = str_replace($blacklist,"",strtolower($splitTitle[0]));
$revisedTitle = implode(" ", $splitTitle);
echo $revisedTitle

This will replace only the string found before the first space. It splits the string with explode, removes the first fragment if it contains a member of $blacklist using str_replace, then rejoins the string with implode.

Result:

is what this title starts with

答

This should work -

preg_replace('/^((the|an|a)\s)/i','',$title);

答

try

 $vowels = array("a", "an", "the");
 $title= str_replace($vowels, "", $title);

for more info :- http://in3.php.net/str_replace

在PHP中从字符串的开头删除“a”，“an”和“the”的最佳方法是什么？

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