PHP sscanf() Function

PHP sscanf() Function

The sscanf() function in PHP parses input from a string according to a given format.

Syntax

sscanf ( string $str , string $format [,mixed &$arg1,$agr2,$arg++... ] )

Parameter

str(required)- This parameter specifies the string to read.

format(required)- This parameter specifies the format to use.

The conversion specification of this parameter follows the given prototype: %[flags][width][.precision]specifier.

Flags

Flag	Description
-	Left-justify within the given field width and by default, it follows the right justification
+	It signifies the prefix positive numbers with a plus sign(+). By default, only negative is prefixed with a negative sign.
(space)	It pads the result with spaces. This is the default.
0	It only left-pads numbers with zeros. With “s” specifiers this can also right-pad with zeros.
(char)	It pads the result with the character (char).

Width

It signifies an integer that states how many characters (minimum) this conversion should result in.

Precision

• e, E, f and F specifiers: The number of digits to be printed after the decimal point (by default, the value is 6).
• g and G specifiers: The maximum number of significant digits to be printed.
• s specifier: It represents the cutoff point, setting a maximum character limit to the string.

Specifiers

Specifier	Description
%	It represents a literal percent character, and no other argument is required.
b	In this, the argument is treated as an integer and presented as a binary number.
c	In this, the argument is treated as an integer and presented as the character with that ASCII.
d	In this, the argument is treated as an integer and presented as a (signed) decimal number.
e	In this, the argument is treated as scientific notation. The precision specifier stands for the number of digits after the decimal point.
E	It is like the “e” specifier, but it uses the uppercase letter.
f	The argument is treated as a float and presented as a floating-point number (locale aware).
F	The argument is treated as a float and presented as a floating-point number (non-locale aware).
g	It represents a general format.
G	Unlike the “g” specifier but it also uses E and F.
o	In this, the argument is treated as an integer and presented as an octal number.
s	In this, the argument is treated and presented as a string.
u	In this, the argument is treated as an integer and presented as an unsigned decimal number.
x	It is treated as an integer and presented as a hexadecimal number (with lowercase letters).
X	It is treated as an integer and presented as a hexadecimal number (with uppercase letters).

Type Handling

Type	Specifiers
String	S
Integer	d, u, c, o, x, X, b
double	g, G, e, E, f, F

arg1(required)- This parameter represents the value to be inserted at the first %-sign in the format string.

arg2(optional)- This parameter represents the value to be inserted at the second %-sign in the format string.

arg++( optional)- This parameter represents the value to be inserted at the third, fourth, etc. %-sign in the format string.

Return

This function returns an array if only two parameters were passed to this function else if optional parameters are passed, it will return the number of assigned values. 

Example 1

Output

int(17)

Example 2

Output

string(5) "Reema"
string(18) "TutorialandEXample"

Example 3

Output

Array
 (
  [0] => We
     [1] => are
     [2] => Learning
     [3] => sscanf()
     [4] => function 
     [5] => in
     [6] => P
     [7] => H
     [8] => P
     [9] => 7
 )