Use of substr() PHP function

Use of substr() PHP function 

PHP is having a very cool function to substract the length of a string. Use of substr() PHP function is very easy and simple. See the below example to know how it works.

PHP Code:     

<?php
$QUERY = "Substract starting five letters from me.";   $QUERY = substr($QUERY, '0', '5');
echo $QUERY;?>

The above code will substract the first five letters from the string.
The output of the above code will be:
Code:

Subst 

Similarly we can substract a part of any string using this function. Just specify a start point and an end point. look at the below example for better explaination.
PHP Code:

<?php
$QUERY = "Substract any five letters from me."   $QUERY = substr($QUERY, '10', '15');
echo $QUERY;?>

The above code will substract all letters coming after 10 and upto 15th character from the string.
The output of the above code will be:
Code:

any five letter 

Similarly we can use it in this way,
Code:

<?php
$rest = substr("abcdef", -1);    // returns "f"
$rest = substr("abcdef", -2);    // returns "ef"
$rest = substr("abcdef", -3, 1); // returns "d"
?>

 Try it yourself and you will enjoy learning PHP ..