%

[Anon]

What "%" are used for in PHP?
For example:

if ($id == ""){
$id = '%';
}

[Anon]

In the script you used, all that is done is that the % is assigned to the variable $id. % is the wildcard for MySQL, so if you select * from something where id = '$id'; all the records will be returned.

[Anon]

There's nothing special about a bare % in a string.
The character does have special meaning to most
SQL engines, and also as the lead-in character for
printf() format strings, but neither of these would
make any sense as a string just containing '%'

[Anon]

% in php is an operator..
i not sure how to say in english..., but it is something like 'the rest of division'
an example:

$a = 10;
$b = $a % 7;
//so $b = 3, from 10 - (7 1) = 3
//you also can do:
$a %= 2;
//so $a = 0, from 10 - (2 5) = 0

if you cant understand from my nice explanation, try 'operators' in php.net

ic.

[Anon]

It fetches the remainder. Don't know why it's used like Paul's example, though.

[Anon]

If it's used in printf or sprintf, then it's a holder for the variable listed at the end.

printf("QueryString is: %s this time",$StringName);

Here, $stringname is substituted where %s is at.

% - a literal percent character. No argument is required.

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 decimal number.

f - the argument is treated as a double, and presented as a floating-point number.

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).

---John Holmes...