Question

More information on imbedding variables in statement ie %s

Asked by: stormist


Where are some links on more information on the use of %s. Is %s the only letter that can be used for variable substitutions? Are there any other uses of % followed by a letter in php?

 $query = sprintf("SELECT * FROM users WHERE user='%s' AND password='%s'",  
             mysql_real_escape_string($user),  
             mysql_real_escape_string($password)); 

                                  
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Asked On
2009-11-02 at 15:05:21ID24865613
Topics

PHP Scripting Language

,

PHP for Windows

,

PHP Frameworks

Participating Experts
2
Points
500
Comments
2

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Answers

 

by: angelIIIPosted on 2009-11-02 at 15:07:46ID: 25724737

the %s is a placeholder for the sprintf function, and to "format" the value as "string":

http://php.net/manual/en/function.sprintf.php

 

by: Ray_PaseurPosted on 2009-11-03 at 07:53:30ID: 25730145

sprintf() returns a formatted string; printf() outputs a formatted string.

# b - the argument is treated as an integer, and presented as a binary number.
# c - the argument is treated as an integer, and presented as the character with that ASCII value.
# d - the argument is treated as an integer, and presented as a (signed) decimal number.
# e - the argument is treated as scientific notation (e.g. 1.2e+2). The precision specifier stands for the number of digits after the decimal point since PHP 5.2.1. In earlier versions, it was taken as number of significant digits (one less).
# u - the argument is treated as an integer, and presented as an unsigned decimal number.
# 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). Available since PHP 4.3.10 and PHP 5.0.3.
# o - the argument is treated as an integer, and presented as an octal number.
# s - the argument is treated as and presented as a string.
# x - the argument is treated as an integer and presented as a hexadecimal number (with lowercase letters).
# X - the argument is treated as an integer and presented as a hexadecimal number (with uppercase letters).

20120131-EE-VQP-002

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