1--TEST--
2Test strtok() function : usage variations - modifying the input string while tokenising
3--FILE--
4<?php
5/* Prototype  : string strtok ( str $str, str $token )
6 * Description: splits a string (str) into smaller strings (tokens), with each token being delimited by any character from token
7 * Source code: ext/standard/string.c
8*/
9
10/*
11 * Testing strtok() : modifying the input string while it is getting tokenised
12*/
13
14echo "*** Testing strtok() : with modification of input string in between tokenising ***\n";
15
16$str = "this is a sample string";
17$token = " ";
18
19echo "\n*** Testing strtok() when string being tokenised is prefixed with another string in between the process ***\n";
20var_dump( strtok($str, $token) );
21// adding a string to the input string which is being tokenised
22$str = "extra string ".$str;
23for( $count = 1; $count <=6; $count++ )  {
24  echo "\n-- Token $count is --\n";
25  var_dump( strtok($token) );
26  echo "\n-- Input str is \"$str\" --\n";
27}
28
29echo "\n*** Testing strtok() when string being tokenised is suffixed with another string in between the process ***\n";
30var_dump( strtok($str, $token) );
31// adding a string to the input string which is being tokenised
32$str = $str." extra string";
33for( $count = 1; $count <=10; $count++ )  {
34  echo "\n-- Token $count is --\n";
35  var_dump( strtok($token) );
36}
37
38echo "Done\n";
39?>
40--EXPECTF--
41*** Testing strtok() : with modification of input string in between tokenising ***
42
43*** Testing strtok() when string being tokenised is prefixed with another string in between the process ***
44string(4) "this"
45
46-- Token 1 is --
47string(2) "is"
48
49-- Input str is "extra string this is a sample string" --
50
51-- Token 2 is --
52string(1) "a"
53
54-- Input str is "extra string this is a sample string" --
55
56-- Token 3 is --
57string(6) "sample"
58
59-- Input str is "extra string this is a sample string" --
60
61-- Token 4 is --
62string(6) "string"
63
64-- Input str is "extra string this is a sample string" --
65
66-- Token 5 is --
67bool(false)
68
69-- Input str is "extra string this is a sample string" --
70
71-- Token 6 is --
72bool(false)
73
74-- Input str is "extra string this is a sample string" --
75
76*** Testing strtok() when string being tokenised is suffixed with another string in between the process ***
77string(5) "extra"
78
79-- Token 1 is --
80string(6) "string"
81
82-- Token 2 is --
83string(4) "this"
84
85-- Token 3 is --
86string(2) "is"
87
88-- Token 4 is --
89string(1) "a"
90
91-- Token 5 is --
92string(6) "sample"
93
94-- Token 6 is --
95string(6) "string"
96
97-- Token 7 is --
98bool(false)
99
100-- Token 8 is --
101bool(false)
102
103-- Token 9 is --
104bool(false)
105
106-- Token 10 is --
107bool(false)
108Done
109