In php, ltrim (), rtrim (), and trim () delete character space instances

This article describes how to delete spaces in ltrim (), rtrim (), and trim () in php. describes the specific usage of ltrim (), rtrim (), and trim () in the form of instances, which has some reference value, for more information about how to delete spaces in ltrim (), rtrim (), and trim () in php, see the example below. Share it with you for your reference. The specific analysis is as follows:

The trim function in php cannot automatically delete all spaces like in asp. the rtrim () trim () function is provided by the PHP professional. For more information, see.

The PHP instance code is as follows:

The code is as follows:

<? Php
$ Str = "Remove leading and trailing spaces ";
Echo "is the original string in square brackets: [". $ str. "]
";
Echo "original string length:". strlen ($ str )."
";
$ Str1 = ltrim ($ str );
Echo "length after ltrim () execution:". strlen ($ str1 )."
";
$ Str2 = rtrim ($ str );
Echo "length after rtrim () execution:". strlen ($ str2 )."
";
$ Str3 = trim ($ str );
Echo "length after trim () execution:". strlen ($ str3 )."
";
Echo "remove the string after the beginning and end spaces: [". $ str3. "]";
?>

I hope this article will help you with php programming.