Substring - PHP

More about PHP substr() function >>>

You know substr()
function in php. The normal usage of this function is here:

Sytax: substr($str, $start, $length);

<?php echo substr(’hello
world’,7,3); ?>
// First parameter is the string, second is
the start index (first character of the string starts from 0) and third param
is the length of the substring

Output: orl .

If we not specified the length parameter (parameter 3),
returns the string from $start to the end of the string.

example:
<?php echo substr(’hello world’,7); ?>
gives the output: orld

If the $start parameter is a negative number, the position
starts from end of the string. Example:

<?php
echo substr(’on the way to operating theatre’, -9) ?>

gives an output: g theatre

another example:

<?php
echo substr(’on the way to operating theatre’, -9,3) ?>

output: g t

If $length is negative, substr( ) counts back from the end of the string to
determine
where your substring ends:

eg: <?php
echo substr(’on the way to operating theatre’, 4,-3) ?>
output: he way to operating thea

another eg: <?php
echo substr(’on the way to operating theatre’, -9,-3) ?>

output: g thea

Thanks and Regards

Syth