07-04-2013
What if there really is a file named 'index'? What if there's a directory named 'index'? What happens when you have both an index.php and index.html, which wins, which loses?
You can use rewrite rules to change something without an extension into .php, but I don't know a way to make it know which one you really wanted.
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LEARN ABOUT PHP
gmp_setbit
GMP_SETBIT(3) 1 GMP_SETBIT(3)
gmp_setbit - Set bit
SYNOPSIS
void gmp_setbit (GMP &$a, int $index, [bool $bit_on = true])
DESCRIPTION
Sets bit $index in $a.
PARAMETERS
o $a
- The value to modify. Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string
provided that it is possible to convert the latter to a number.
o $index
- The index of the bit to set. Index 0 represents the least significant bit.
o $bit_on
- True to set the bit (set it to 1/on); false to clear the bit (set it to 0/off).
RETURN VALUES
A GMP number resource in PHP 5.5 and earlier, or a GMP object in PHP 5.6 and later.
EXAMPLES
Example #1
gmp_setbit(3) example - 0 index
<?php
$a = gmp_init("2"); //
echo gmp_strval($a), ' -> 0b', gmp_strval($a, 2), "
";
gmp_setbit($a, 0); // 0b10 now becomes 0b11
echo gmp_strval($a), ' -> 0b', gmp_strval($a, 2), "
";
?>
The above example will output:
2 -> 0b10
3 -> 0b11
Example #2
gmp_setbit(3) example - 1 index
<?php
$a = gmp_init("0xfd");
echo gmp_strval($a), ' -> 0b', gmp_strval($a, 2), "
";
gmp_setbit($a, 1); // index starts at 0
echo gmp_strval($a), ' -> 0b', gmp_strval($a, 2), "
";
?>
The above example will output:
253 -> 0b11111101
255 -> 0b11111111
Example #3
gmp_setbit(3) example - clearing a bit
<?php
$a = gmp_init("0xff");
echo gmp_strval($a), ' -> 0b', gmp_strval($a, 2), "
";
gmp_setbit($a, 0, false); // clear bit at index 0
echo gmp_strval($a), ' -> 0b', gmp_strval($a, 2), "
";
?>
The above example will output:
255 -> 0b11111111
254 -> 0b11111110
NOTES
Note
Unlike most of the other GMP functions, gmp_setbit(3) must be called with a GMP resource that already exists (using gmp_init(3) for
example). One will not be automatically created.
SEE ALSO
gmp_clrbit(3), gmp_testbit(3).
PHP Documentation Group GMP_SETBIT(3)