php get part of string

1$result = substr("Hello How are you", 0, 5); //first 5 chars "Hello"

1
2<?php
3echo substr('abcdef', 1);     // bcdef
4echo substr('abcdef', 1, 3);  // bcd
5echo substr('abcdef', 0, 4);  // abcd
6echo substr('abcdef', 0, 8);  // abcdef
7echo substr('abcdef', -1, 1); // f
8
9// Accessing single characters in a string
10// can also be achieved using "square brackets"
11$string = 'abcdef';
12echo $string[0];                 // a
13echo $string[3];                 // d
14echo $string[strlen($string)-1]; // f
15
16?>
17
18//substr() function returns certain bits of a string 

1$newstring = substr($dynamicstring, -7);

1substr ( $string , $start , $length  );
2
3/**Returns the extracted part of string;
4  *or FALSE on failure, or an empty string
5  */

1<?php
2$str = "Africa Beautiful!";
3echo substr($str, 0, 6);  // Outputs: Africa
4echo substr($str, 0, -10); // Outputs: Beautiful
5echo substr($str, 0);     // Outputs: Africa Beautiful!
6?>