That class will take any string that you put in the $cust array and remove it from the end of the $pinfo string. So I wrote this class to reuse when stuff needs to be trimmed. I needed a way to trim all white space and then a few chosen strings from the end of a string. It continues until the charlist parameter has been completely processed, one at a time, and the str string no longer contains any matches. If the characters do not match, it moves to the next character in the charlist parameter comparing once again. If the characters match, it trims it off and starts over again, looking at the "new" last character in the str string and compares it to the first character in the charlist again. Rtrim reads a character, one at a time, from the optional charlist parameter and compares it to the end of the str string. This shows how rtrim works when using the optional charlist parameter: Examples Example 1 Usage example of trim () function substrwords($text, $maxchar, $end='.Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Predefined Attributes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session Security Filesystem Security Database Security Error Reporting User Submitted Data Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation GUI Extensions Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search characters Optionally, the stripped characters can also be specified using the characters parameter. The solution is to create a new function that will avoid cutting words apart when cutting a string by a number of characters. This example highlights the major problem with this function in that it will take no notice of the words in a string. They remove either whitespace or any other set of characters from the left end, right end or both ends respectively. This helper also includes a third parameter so you change the ending on the trimmed string. In this situation seven characters: value strlimit ('This string is really really long.', 7) // This st. The string variable is now set to the following. There are three different trimming functions in PHP called ltrim (), rtrim () and trim (). The first parameter is your string and the second is the length you want to trim it too. So to cut to 30 characters we would use the following. The first is the string, the second is where to start cutting from and the third is the amount of characters to cut to. Negative widths count from the end of the string. The substr() function has three parameters. Number of characters from the beginning of string (first character is 0), or if start is negative, number of characters from the end of the string. $string = 'This string is too long and will be cut short.' For example, the following string variable, which we will cut to a maximum of 30 characters. Cutting a string to a specified length is accomplished with the substr() function.#PHP TRIM TEXT TO LENGTH ARCHIVE#
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