Simple PHP Help
- Thread starter bluemagic
- Start date
Hi,
Hope this helps you.
Hope this helps you.
Code:
<?php
function rand_chars($c, $l, $u = FALSE) {
if (!$u) for ($s = '', $i = 0, $z = strlen($c)-1; $i < $l; $x = rand(0,$z), $s .= $c{$x}, $i++);
else for ($i = 0, $z = strlen($c)-1, $s = $c{rand(0,$z)}, $i = 1; $i != $l; $x = rand(0,$z), $s .= $c{$x}, $s = ($s{$i} == $s{$i-1} ? substr($s,0,-1) : $s), $i=strlen($s));
return $s;
}
?>
string $c is the string of characters to use.
integer $l is how long you want the string to be.
boolean $u is whether or not a character can appear beside itself.
Examples:
rand_chars("ABCEDFG", 2);
rand_chars("ABCEDFG", 2, TRUE);
drkenneth
Regular Member
- Nov 13, 2008
- 270
- 181
Here's what you need (edited the posted script, so some credit to catchout)
Just run print_list with w/e number you want and whatever separator you want and it will print them. (An example is shown at the bottom.)
PHP:
<?php
function rand_chars($c, $l, $u = FALSE) {
if (!$u) for ($s = '', $i = 0, $z = strlen($c)-1; $i < $l; $x = rand(0,$z), $s .= $c{$x}, $i++);
else for ($i = 0, $z = strlen($c)-1, $s = $c{rand(0,$z)}, $i = 1; $i != $l; $x = rand(0,$z), $s .= $c{$x}, $s = ($s{$i} == $s{$i-1} ? substr($s,0,-1) : $s), $i=strlen($s));
return $s;
}
function print_list($num, $seperator)
{
$I = 0;
for ($I = 0; $I < $num; $I++)
{
echo rand_chars("abcdefghijklmnopqrstuvwxyz", 2).$seperator;
}
}
print_list(100,"<br />");
?>Just run print_list with w/e number you want and whatever separator you want and it will print them. (An example is shown at the bottom.)
MuonTrail
Registered Member
- Mar 5, 2009
- 96
- 93
Did you by chance mis-copy the code? I tested the snippet drkenneth provided and it worked fine.
jinjangjoe
Newbie
- Jan 14, 2009
- 34
- 6
You only can get 2*26*25 = 1,300 unique combinations, so of course
you'll get repetitions of you ask for 10,000.
skweekykleen
Newbie
- Jul 8, 2008
- 47
- 68
here's another way...
$how_many_times is how many times you want to print the characters out...
$group_size is how many letters in the group...your request was 2...
$letters is the alphabet, but you could add any other text, punctuation, etc in there...
This one basically stacks commands to keep the code short, but it loops 'x' number of times, shuffles (randomizes) the list of letters each time, then breaks it into groups of whatever size you specify, and spits out one of those random groups...it's fast and simple.
Note...for anyone curious, I use array_shift instead of array_pop, because pop takes from the right end, and without knowing the size of the letters array and group_size beforehand, we could end up with odd numbers in chunking, so it's better to take from the left...
anyway, any questions hit me up...
PHP:
<?php
$how_many_times = 10;
$group_size = 2;
$letters = str_split("abcdefghijklmnopqrstuvwxyz");
while($i++ <= $how_many_times) {
shuffle($letters);
print implode("", array_shift(array_chunk($letters, $group_size))) . "<br>";
}
?>$how_many_times is how many times you want to print the characters out...
$group_size is how many letters in the group...your request was 2...
$letters is the alphabet, but you could add any other text, punctuation, etc in there...
This one basically stacks commands to keep the code short, but it loops 'x' number of times, shuffles (randomizes) the list of letters each time, then breaks it into groups of whatever size you specify, and spits out one of those random groups...it's fast and simple.
Note...for anyone curious, I use array_shift instead of array_pop, because pop takes from the right end, and without knowing the size of the letters array and group_size beforehand, we could end up with odd numbers in chunking, so it's better to take from the left...
anyway, any questions hit me up...
oldenstylehats
Elite Member
- Apr 10, 2008
- 1,709
- 1,215
More specific than what?