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--TEST-- Test strtok() function : usage variations - miscellaneous inputs --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() : with miscellaneous combinations of string and token */ echo "*** Testing strtok() : with miscellaneous inputs ***\n"; // defining arrays for input strings and tokens $string_array = array( "HELLO WORLD", "hello world", "_HELLO_WORLD_", "/thello/t/wor/ttld", "hel/lo/t/world", "one:$:two:!:three:#:four", "\rhello/r/wor\rrld", chr(0), chr(0).chr(0), chr(0).'hello'.chr(0), 'hello'.chr(0).'world' ); $token_array = array( "wr", "hello world", "__", "t/", '/t', ":", "\r", "\0", "\0", "\0", "\0", ); // loop through each element of the array and check the working of strtok() // when supplied with different string and token values $counter =1; foreach( $string_array as $string ) { echo "\n--- Iteration $counter ---\n"; var_dump( strtok($string, $token_array[$counter-1]) ); for( $count = 1; $count <=5; $count++ ) { var_dump( strtok($token_array[$counter-1]) ); } $counter++; } echo "Done\n"; ?> --EXPECTF-- *** Testing strtok() : with miscellaneous inputs *** --- Iteration 1 --- string(11) "HELLO WORLD" bool(false) bool(false) bool(false) bool(false) bool(false) --- Iteration 2 --- bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) --- Iteration 3 --- string(5) "HELLO" string(5) "WORLD" bool(false) bool(false) bool(false) bool(false) --- Iteration 4 --- string(5) "hello" string(3) "wor" string(2) "ld" bool(false) bool(false) bool(false) --- Iteration 5 --- string(3) "hel" string(2) "lo" string(5) "world" bool(false) bool(false) bool(false) --- Iteration 6 --- string(3) "one" string(1) "$" string(3) "two" string(1) "!" string(5) "three" string(1) "#" --- Iteration 7 --- string(11) "hello/r/wor" string(3) "rld" bool(false) bool(false) bool(false) bool(false) --- Iteration 8 --- bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) --- Iteration 9 --- bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) --- Iteration 10 --- string(5) "hello" bool(false) bool(false) bool(false) bool(false) bool(false) --- Iteration 11 --- string(5) "hello" string(5) "world" bool(false) bool(false) bool(false) bool(false) Done