How to use php trim function?

The trim function in PHP is a built-in function, which is used to remove spaces and predefined characters on the left and right sides of a string. Its syntax is [trim($string, $charlist)].

php trim function usage:

Syntax:

trim($string, $charlist)

Parameters:

• The trim function accepts one mandatory parameter and one optional parameter, as shown in the following syntax.

• #$string: This parameter specifies the string from which left and right whitespace and predefined characters are to be removed

• $charlist: This is a Optional parameter specifying the characters to be removed from the string. If this is not mentioned, all the following characters will be removed:

“\ 0” - NULL
“\ t” - 标签
“\ n” - 新行
“\ x0B” - 垂直制表符
"\ r” - 回车
“ ” - 普通的空格

Return value:

Returns by removing spaces and predefined characters on the left and right sides of the string Modified string.

Code example 1:

<?php 

$str = "Hello World!"; 
echo trim($str, "Hell!"); 
?>

Output:

o World

Code example 2:

<?php 

$str = "  php中文网 "; 
  
echo trim($str); 
?>

Output:

php中文网

Related recommendations: "PHP Tutorial"

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