IS_NUMERIC(3) 1 IS_NUMERIC(3)is_numeric - Finds whether a variable is a number or a numeric stringSYNOPSIS
bool is_numeric (mixed $var)
DESCRIPTION
Finds whether the given variable is numeric. Numeric strings consist of optional sign, any number of digits, optional decimal part and
optional exponential part. Thus +0123.45e6 is a valid numeric value. Hexadecimal (e.g. 0xf4c3b00c), Binary (e.g. 0b10100111001), Octal
(e.g. 0777) notation is allowed too but only without sign, decimal and exponential part.
PARAMETERS
o $var
- The variable being evaluated.
RETURN VALUES
Returns TRUE if $var is a number or a numeric string, FALSE otherwise.
EXAMPLES
Example #1
is_numeric(3) examples
<?php
$tests = array(
"42",
1337,
0x539,
02471,
0b10100111001,
1337e0,
"not numeric",
array(),
9.1
);
foreach ($tests as $element) {
if (is_numeric($element)) {
echo "'{$element}' is numeric", PHP_EOL;
} else {
echo "'{$element}' is NOT numeric", PHP_EOL;
}
}
?>
The above example will output:
SEE ALSO ctype_digit(3), is_bool(3), is_null(3), is_float(3), is_int(3), is_string(3), is_object(3), is_array(3).
PHP Documentation Group IS_NUMERIC(3)
Check Out this Related Man Page
IS_INT(3) 1 IS_INT(3)is_int - Find whether the type of a variable is integerSYNOPSIS
bool is_int (mixed $var)
DESCRIPTION
Finds whether the type of the given variable is integer.
Note
To test if a variable is a number or a numeric string (such as form input, which is always a string), you must use is_numeric(3).
PARAMETERS
o $var
- The variable being evaluated.
RETURN VALUES
Returns TRUE if $var is an integer, FALSE otherwise.
EXAMPLES
Example #1
is_int(3) example
<?php
$values = array(23, "23", 23.5, "23.5", null, true, false);
foreach ($values as $value) {
echo "is_int(";
var_export($value);
echo ") = ";
var_dump(is_int($value));
}
?>
The above example will output:
is_int(23) = bool(true)
is_int('23') = bool(false)
is_int(23.5) = bool(false)
is_int('23.5') = bool(false)
is_int(NULL) = bool(false)
is_int(true) = bool(false)
is_int(false) = bool(false)
SEE ALSO is_bool(3), is_float(3), is_numeric(3), is_string(3), is_array(3), is_object(3).
PHP Documentation Group IS_INT(3)
Hi All,
How do i modify the below script such that if the input is numeric, it will give the numeric digit, else it will ouput "0"
echo "xxx" | awk '/^+$/' (6 Replies)
if test $b -ne
then
echo "\n\n\n\tPassword reset has been done successfully"
else
echo "\n\n\n\tAn error occurred"
fi
i want to check whether $b is non-numeric so how to do that? (3 Replies)
Hi all,
I am having a problem in comparing numeric value with string.
I have a variable in my script which gets the value dynamically. It can be a numeric value or a string.
I have to do separate task based on its value numeric or sting variable VARIABLE.
I grep FILE_COUNT and obtained... (7 Replies)
Is there an easy way using a command or other routine for testing whether an argument on the command line is numeric? Just want to validate... I ran a search and didn't find a similar question....
Thx (3 Replies)
Hi all,
I have a problem here. I have a file and let we take the content of the file is just '32' (only a numeric value in that file). Now I need to assign this numeric value ( value in that file) to a variable. Is that possible? If so, can you plz advice me on this?
Thanks in... (4 Replies)
Hi,
how to check the given string is numeric or not , without converting ( using strtol...).
for ex: if string is C01 - non-numeric data
if string is 001 - numeric data
TIA (11 Replies)
Hi,
Here is my script to read a file into array:
awk -F '+' '
# load first file into array indexed by fields 1 and 2
NR == FNR {
file1nr = FNR
for (i=3; i<NF; i++) {
file1 = $i
}
I have this... (5 Replies)
Can someone tell me how to change the first column in a very large 17k line file from a random 10 digit numeric value to a non numeric value. The format of lines in the file is:
1702938475,SNU022,201004
the first 10 numbers always begin with 170 (6 Replies)
Hi,
I just want to sort my file with exponential notation. For example:
1;2;4;s
1;5e-01;4;s
1;1;4;s
I used sort -gk2, but it does not sort in the correct way. What's wrong? (15 Replies)
i have a file called 'test.txt' which contains the below data.
abc123
123445
123abc
23224q
From the above data, i want to display the line which contains only numeric . So i have tried the below commands with sed
sed -n '/^$/p' test.txt
sed '/^$/!d' test.txt
But it... (4 Replies)
friends that way I can validate that the value is numeric taken
instance
var = 12re
if var = numeric then a
echo "Numerical
else
echo "not mumerico"
fi
edit by bakunin: please use CODE-tags for code, data and terminal output (yourself). (9 Replies)