PHP uses the trim function to remove leading and trailing spaces of strings and special character instances

This article describes how to use the trim function in PHP to remove spaces and special characters from the left and right strings, combined with the instance, the trim function does not include additional parameters to remove spaces and the use of additional parameters to remove specified characters is analyzed, for more information about how to use the trim function to remove spaces and special characters in a string, see the following example. We will share this with you for your reference. The details are as follows:

The trim () function in PHP is defined as follows::

Trim (string, charlist)

Parameters are described as follows:

String is required. Specifies the string to be checked.

Charlist

Optional. Specifies which characters are deleted from the string. If omitted, all the following characters are removed:
"\ 0"-NULL
"\ T"-tab
"\ N"-line feed
"\ X0B"-vertical tab
"\ R"-Press enter
""-Space

The sample code is as follows:

<? Php $ str = "\ r (: @ _ @ provides a large number of excellent script and material downloads @ _ @:)"; echo trim ($ str); echo"
"; Echo trim ($ str," \ r (: :) ");?>

The running result is as follows:

(: @ _ @ Provides a large number of excellent scripts and materials for Download @ _ @:) @ _ @ provides a large number of excellent scripts and materials for Download @_@

I hope this article will help you with PHP programming.