--TEST--
strlen() function
--INI--
precision = 12
--FILE--
<?php
/* returns the length of a given string */
echo "#### Basic operations and variations ####\n";
$strings = array( "Hello, World",
'Hello, World',
'!!Hello, World',
"??Hello, World",
"$@#%^&*!~,.:;?",
"123",
123,
"-1.2345",
-1.2344,
NULL,
"",
" ",
"\0",
"\x000", // len = 2
"\xABC", // len = 2
"\0000", // len = 2
"0",
0,
"\t", // len = 1
'\t', // len = 2
TRUE,
FALSE,
"Hello, World\0",
"Hello\0World",
'Hello, World\0',
"Hello, World\n",
"Hello, World\r",
"Hello, World\t",
"Hello, World\\",
" ",
chr(128).chr(234).chr(65).chr(255).chr(256),
"abcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+=|?><-;:$
[]{}{{{}}}[[[[]][]]]***&&&^^%$###@@!!@#$%&^&**/////|\\\\\\
abcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+=|?><-;:$
[]{}{{{}}}[[[[]][]]]***&&&^^%$###@@!!@#$%&^&**/////|\\\\\\
abcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+=|?><-;:$
[]{}{{{}}}[[[[]][]]]***&&&^^%$###@@!!@#$%&^&**/////|\\\\\\
abcdefghijklmnopqrstuvwxyz0123456789"
);
/* loop through to find the length of each string */
for($i=0; $i<count($strings); $i++) {
echo "String length of '$strings[$i]' is => ";
var_dump( strlen($strings[$i]) );
}
echo "\n#### Testing Miscelleneous inputs ####\n";
echo "--- Testing objects ---\n";
/* we get "Catchable fatal error: saying Object of class could not be converted
to string" by default when an object is passed instead of string:
The error can be avoided by chosing the __toString magix method as follows: */
class string {
function __toString() {
return "Hello, world";
}
}
$obj_string = new string;
var_dump(strlen("$obj_string"));
echo "\n--- Testing arrays ---\n";
$str_arr = array("hello", "?world", "!$%**()%**[][[[&@#~!", array());
var_dump(strlen($str_arr));
var_dump(strlen("$str_arr[1]"));
var_dump(strlen("$str_arr[2]"));
echo "\n--- Testing Resources ---\n";
$filename1 = "dummy.txt";
$file1 = fopen($filename1, "w"); // creating new file
/* getting resource type for file handle */
$string1 = get_resource_type($file1);
$string2 = (int)get_resource_type($file1); // converting stream type to int
/* $string1 is of "stream" type */
var_dump(strlen($string1)); // int(6)
/* $string2 holds a value of "int(0)" */
var_dump(strlen($string2)); // int(1)
fclose($file1); // closing the file "dummy.txt"
unlink("$filename1"); // deletes "dummy.txt"
echo "\n--- Testing a longer and heredoc string ---\n";
$string = <<<EOD
abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789
abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789
abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789
abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789
abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789
abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789
abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789
@#$%^&**&^%$#@!~:())))((((&&&**%$###@@@!!!~~~~@###$%^&*
abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789
EOD;
var_dump(strlen($string));
echo "\n--- Testing a heredoc null string ---\n";
$str = <<<EOD
EOD;
var_dump(strlen($str));
echo "\n--- Testing simple and complex syntax strings ---\n";
$str = 'world';
/* Simple syntax */
var_dump(strlen("$str"));
var_dump(strlen("$str'S"));
var_dump(strlen("$strS"));
/* String with curly braces, complex syntax */
var_dump(strlen("${str}S"));
var_dump(strlen("{$str}S"));
echo "\n--- strlen for long float values ---\n";
/* Here two different outputs, which depends on the rounding value
before converting to string. Here Precision = 12 */
var_dump(strlen(10.55555555555555555555555555)); // len = 13
var_dump(strlen(10.55555555595555555555555555)); // len = 12
echo "\n--- Nested strlen() ---\n";
var_dump(strlen(strlen("Hello"))); // len=1
echo "\n#### error conditions ####";
/* Zero arguments */
strlen();
/* Greater number of args than expected */
strlen("string1", "string2");
strlen("", "");
echo "Done\n";
?>
--EXPECTF--
#### Basic operations and variations ####
String length of 'Hello, World' is => int(12)
String length of 'Hello, World' is => int(12)
String length of '!!Hello, World' is => int(14)
String length of '??Hello, World' is => int(14)
String length of '$@#%^&*!~,.:;?' is => int(14)
String length of '123' is => int(3)
String length of '123' is => int(3)
String length of '-1.2345' is => int(7)
String length of '-1.2344' is => int(7)
String length of '' is => int(0)
String length of '' is => int(0)
String length of ' ' is => int(1)
String length of ' ' is => int(1)
String length of ' 0' is => int(2)
String length of '«C' is => int(2)
String length of ' 0' is => int(2)
String length of '0' is => int(1)
String length of '0' is => int(1)
String length of ' ' is => int(1)
String length of '\t' is => int(2)
String length of '1' is => int(1)
String length of '' is => int(0)
String length of 'Hello, World ' is => int(13)
String length of 'Hello World' is => int(11)
String length of 'Hello, World\0' is => int(14)
String length of 'Hello, World
' is => int(13)
String length of 'Hello, World
' is => int(13)
String length of 'Hello, World ' is => int(13)
String length of 'Hello, World\' is => int(13)
String length of ' ' is => int(14)
String length of '€êAÿ ' is => int(5)
String length of 'abcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+=|?><-;:$
[]{}{{{}}}[[[[]][]]]***&&&^^%$###@@!!@#$%&^&**/////|\\\
abcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+=|?><-;:$
[]{}{{{}}}[[[[]][]]]***&&&^^%$###@@!!@#$%&^&**/////|\\\
abcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+=|?><-;:$
[]{}{{{}}}[[[[]][]]]***&&&^^%$###@@!!@#$%&^&**/////|\\\
abcdefghijklmnopqrstuvwxyz0123456789' is => int(495)
#### Testing Miscelleneous inputs ####
--- Testing objects ---
int(12)
--- Testing arrays ---
Notice: Array to string conversion in %s on line %d
int(5)
int(6)
int(20)
--- Testing Resources ---
int(6)
int(1)
--- Testing a longer and heredoc string ---
int(639)
--- Testing a heredoc null string ---
int(0)
--- Testing simple and complex syntax strings ---
int(5)
int(7)
Notice: Undefined variable: strS in %s on line %d
int(0)
int(6)
int(6)
--- strlen for long float values ---
int(13)
int(12)
--- Nested strlen() ---
int(1)
#### error conditions ####
Warning: Wrong parameter count for strlen() in %s on line %d
Warning: Wrong parameter count for strlen() in %s on line %d
Warning: Wrong parameter count for strlen() in %s on line %d
Done