PHP tutorial-String manipulation

String manipulation in PHP

PHP provides a rich set of functions to manipulate strings. In this topic, we will discuss some common functions used by PHP developers to remove spaces from a string, count the number of characters of a string, convert a string to contain upper case or lower case letters, split a string or join strings, get substrings from a string, compare strings, search for a substring in a string, and replace and old substring with a new substring of a string, etc.

trim, ltrim, and rtrim functions

trim, ltrim, and rtrim functions are used to remove space from a string.

-trim(String) removes leading and trailing space from the string.

-ltrim(String) removes leading spaces.

-rtrim(String) removes trailing spaces.

Example:

<?php
$str=" PHP web development ";
echo trim($str)."<br>";//remove spaces at the beginning and the end
echo ltrim($str)."<br>";//remove spaces at the beginning only
echo rtrim($str)."<br>";//remove spaces at the end only
?>

Posted comments

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03-15-2013

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10-26-2012

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