php Warning:strstr()[function.strstr]:Empty delimiter_PHP教程

Today, when using the strstr function in php, it prompted Warning: strstr()[function.strstr]: Empty delimiter is wrong. Later, after repeated searches, I found a solution. Students in need can refer to it.

Warning: strstr() [function.strstr]: Empty delimiter

Very strange, is there something wrong with one of the parameters of the php function strstr?

So I wrote a test example

$text=”asdfghjklqwertyuiopzxcvbnm”;
//$key=”g”;

The code is as follows

代码如下	复制代码
$text=”asdfghjklqwertyuiopzxcvbnm”; //$key=”g”; //根据php错误提示Empty delimiter,判断应该不会是$text的值出问题,所以故意注释了key值 if(strstr($text, $key)){ echo “found it”; }else{ echo “not found”; } ?>

Copy code

//According to the PHP error prompt Empty delimiter, it was judged that there should not be a problem with the value of $text, so the key value was deliberately annotated

if(strstr($text, $key)){
echo “found it”;
}else{
echo “not found”;
}

?> strstr() did not report an error, so I thought that the $key value might be an empty string "", so I gave it a try. Sure enough, when strstr($text,""), an error message appears: Warning: strstr() [function.strstr]: Empty delimiter

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