- Output for 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- <?
$values = array(
'-0',
-0,
0,
123,
-123,
'123',
'-123',
'0123',
'123 ',
'0',
'000',
'+123',
'1.23',
1.23,
'123e4',
'0x123',
'potato',
'EEBD',
false,
null,
);
foreach($values as $value){
echo("TRYING WITH ");
var_dump($value);
echo("is_int: ");
var_dump(is_int($value));
echo("is_numeric: ");
var_dump(is_numeric($value));
echo("regex: ");
var_dump(preg_match('/^\-?[0-9]+$/',$value));
echo("ctype_digit: ");
var_dump(ctype_digit(ltrim((string)$value, '-')));
echo("filter_var: ");
var_dump(filter_var($value, FILTER_VALIDATE_INT));
echo("\n");
echo("\n");
}
?>
- Output for 8.0.13
- TRYING WITH string(2) "-0"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(0)
TRYING WITH int(0)
is_int: bool(true)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(0)
TRYING WITH int(0)
is_int: bool(true)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(0)
TRYING WITH int(123)
is_int: bool(true)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(123)
TRYING WITH int(-123)
is_int: bool(true)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(-123)
TRYING WITH string(3) "123"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(123)
TRYING WITH string(4) "-123"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(-123)
TRYING WITH string(4) "0123"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: bool(false)
TRYING WITH string(4) "123 "
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: int(123)
TRYING WITH string(1) "0"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(0)
TRYING WITH string(3) "000"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: bool(false)
TRYING WITH string(4) "+123"
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: int(123)
TRYING WITH string(4) "1.23"
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH float(1.23)
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH string(5) "123e4"
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH string(5) "0x123"
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH string(6) "potato"
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH string(4) "EEBD"
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH bool(false)
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH NULL
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
- Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.6, 7.3.32 - 7.3.33, 7.4.33
- TRYING WITH string(2) "-0"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(0)
TRYING WITH int(0)
is_int: bool(true)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(0)
TRYING WITH int(0)
is_int: bool(true)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(0)
TRYING WITH int(123)
is_int: bool(true)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(123)
TRYING WITH int(-123)
is_int: bool(true)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(-123)
TRYING WITH string(3) "123"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(123)
TRYING WITH string(4) "-123"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(-123)
TRYING WITH string(4) "0123"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: bool(false)
TRYING WITH string(4) "123 "
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: int(123)
TRYING WITH string(1) "0"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(0)
TRYING WITH string(3) "000"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: bool(false)
TRYING WITH string(4) "+123"
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: int(123)
TRYING WITH string(4) "1.23"
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH float(1.23)
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH string(5) "123e4"
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH string(5) "0x123"
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH string(6) "potato"
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH string(4) "EEBD"
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH bool(false)
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH NULL
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
- Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
- TRYING WITH string(2) "-0"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(0)
TRYING WITH int(0)
is_int: bool(true)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(0)
TRYING WITH int(0)
is_int: bool(true)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(0)
TRYING WITH int(123)
is_int: bool(true)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(123)
TRYING WITH int(-123)
is_int: bool(true)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(-123)
TRYING WITH string(3) "123"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(123)
TRYING WITH string(4) "-123"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(-123)
TRYING WITH string(4) "0123"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: bool(false)
TRYING WITH string(4) "123 "
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: int(123)
TRYING WITH string(1) "0"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: int(0)
TRYING WITH string(3) "000"
is_int: bool(false)
is_numeric: bool(true)
regex: int(1)
ctype_digit: bool(true)
filter_var: bool(false)
TRYING WITH string(4) "+123"
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: int(123)
TRYING WITH string(4) "1.23"
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH float(1.23)
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH string(5) "123e4"
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH string(5) "0x123"
is_int: bool(false)
is_numeric: bool(true)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH string(6) "potato"
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH string(4) "EEBD"
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH bool(false)
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)
TRYING WITH NULL
is_int: bool(false)
is_numeric: bool(false)
regex: int(0)
ctype_digit: bool(false)
filter_var: bool(false)