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Using trim to get rid of whitespace

This shows how to use the trim function to remove white spaces from either side of a string . This does not remove any white space from inside the string . The format of this function is trim(string); .

What could we use this for , well lets say you wanted a user to enter there name in a text box and then to validate it . There is a chance they could add extra white space before or after their name , this would ensure this was removed.

Code :

<?php
//trimming white space from a string
//our two strings
$string1 = " spaces before";
$string2 = " spaces before and after ";
//remove the whitespace
$trimmed_string1 = trim($string1);
$trimmed_string2 = trim($string2);
//display the text
echo $trimmed_string1;
echo "<br>";
echo $trimmed_string2;
?>

Example :

spaces before
spaces before and after