php - 如何摆脱这个奇怪的“空分隔符”消息

Question

I have some code that uses the stristr function to extract data I need.

It gives me this Warning for every iteration of the loop:

Warning: stristr() [function.stristr]: Empty delimiter in ... line 55

The code works apart from this Warning. Here is the code:

$data = stristr("$text", "$key");
$result = string_limit_words($data,2);
print "$result<BR>";

How do I get rid of the warning message?

Answer 1

$data = $text;
if($key)
   $data = stristr($data, $key);
$result = string_limit_words($data,2);
print "$result<BR>";

Basically only do the stristr if the $key (the needle) is not an empty string