The Substr () PHP Function is used to return part of a string. It is written as substr (string, start, optional length);.The string is whatever string you want to return a portion of. The start is how many characters in to skip before starting. Setting this to 3 would skip the first three and start returning at the forth character. Setting this to a negative number will start counting backwards from the end of the string.
Length is an optional parameter. If you set this to a positive number, it will return that number of characters. If you set this to a negative number it will count that many numbers from the end of the string and return whatever is left in the middle.
Length is an optional parameter. If you set this to a positive number, it will return that number of characters. If you set this to a negative number it will count that many numbers from the end of the string and return whatever is left in the middle.
See how this works :
<?php
// this will return bcdefghijk
echo substr(‘abcdefghijk’, 1);
echo “<br>”;// this will return defghijk
echo substr(‘abcdefghijk’, 3);
echo “<br>”;// this will return abc
echo substr(‘abcdefghijk’, 0, 3);
echo “<br>”;// this will return ijk
echo substr(‘abcdefghijk’, -3);
echo “<br>”;// this will return bcdefghij
echo substr(‘abcdefghijk’, 1, -1);
echo “<br>”;// this will return cdefgh
echo substr(‘abcdefghijk’, 2, -3);
echo “<br>”;
?>
