What should I do if php exceeds the character length?

Solution to php exceeding the character length: 1. Create a PHP sample file; 2. Display characters of the specified length through the "function cutSubstr($str,$len=30){...}" method String, and when the characters exceed the length, the tail is filled with ellipsis and displayed.

#The operating environment of this article: Windows7 system, PHP7.1, Dell G3.

What should I do if php exceeds the character length?

php displays a string of specified length. If the length exceeds the length, fill in the tail with an ellipsis (...) and display

/**
* php显示指定长度的字符串，超出长度以省略号(...)填补尾部显示
* @ str 字符串
* @ len 指定长度
**/
function cutSubstr($str,$len=30){
 if (strlen($str)>$len) {
$str=substr($str,0,$len) . '...';
 }
 return $str;
}

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