--TEST--
Test strtok() function : usage variations - modifying the input string while tokenising
--FILE--
<?php
/* Prototype : string strtok ( str $str, str $token )
* Description: splits a string (str) into smaller strings (tokens), with each token being delimited by any character from token
* Source code: ext/standard/string.c
*/
/*
* Testing strtok() : modifying the input string while it is getting tokenised
*/
echo "*** Testing strtok() : with modification of input string in between tokenising ***\n";
$str = "this is a sample string";
$token = " ";
echo "\n*** Testing strtok() when string being tokenised is prefixed with another string in between the process ***\n";
var_dump( strtok($str, $token) );
// adding a string to the input string which is being tokenised
$str = "extra string ".$str;
for( $count = 1; $count <=6; $count++ ) {
echo "\n-- Token $count is --\n";
var_dump( strtok($token) );
echo "\n-- Input str is \"$str\" --\n";
}
echo "\n*** Testing strtok() when string being tokenised is suffixed with another string in between the process ***\n";
var_dump( strtok($str, $token) );
// adding a string to the input string which is being tokenised
$str = $str." extra string";
for( $count = 1; $count <=10; $count++ ) {
echo "\n-- Token $count is --\n";
var_dump( strtok($token) );
}
echo "Done\n";
?>
--EXPECTF--
*** Testing strtok() : with modification of input string in between tokenising ***
*** Testing strtok() when string being tokenised is prefixed with another string in between the process ***
string(4) "this"
-- Token 1 is --
string(2) "is"
-- Input str is "extra string this is a sample string" --
-- Token 2 is --
string(1) "a"
-- Input str is "extra string this is a sample string" --
-- Token 3 is --
string(6) "sample"
-- Input str is "extra string this is a sample string" --
-- Token 4 is --
string(6) "string"
-- Input str is "extra string this is a sample string" --
-- Token 5 is --
bool(false)
-- Input str is "extra string this is a sample string" --
-- Token 6 is --
bool(false)
-- Input str is "extra string this is a sample string" --
*** Testing strtok() when string being tokenised is suffixed with another string in between the process ***
string(5) "extra"
-- Token 1 is --
string(6) "string"
-- Token 2 is --
string(4) "this"
-- Token 3 is --
string(2) "is"
-- Token 4 is --
string(1) "a"
-- Token 5 is --
string(6) "sample"
-- Token 6 is --
string(6) "string"
-- Token 7 is --
bool(false)
-- Token 8 is --
bool(false)
-- Token 9 is --
bool(false)
-- Token 10 is --
bool(false)
Done
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