[SOLVED] shuffle wont work correctly with a caternation

[redarrow]

$i varable $s.$p should shuffle with mixed letters and numbers why not please.......

 

 

the caternated varable $i wont shuffle with example 2j64 it always dsf345

letter then number............

 

must be the caternation but why please........

<?php

$a=range(a,z);
shuffle($a);
$c=implode('',$a);
$s=substr("$c",0,3);

$z=range(0,9);
shuffle($z);
$d=implode('',$z);
$p=substr("$d",0,3);

$i=$s.$p;
$h=explode(' ',$i);
shuffle($h);
$z=implode(' ',$h);
echo $z;

?>

[GingerRobot]

The problem is with this line:

 

$h=explode(' ',$i);

 

The characters and letters aren't separated by spaces, so there's nothing to explode by. explode() therefore returns an array with one element - the two strings joined together.

 

This is pretty similar to what you were trying to do:

 

<?php
$nums = range(0,9);
$nums_used = array_rand($nums,3);
$chars = range('a','z');
$chars = array_flip($chars);//array rand returns keys, not values - we want the values, so flip this array.
$chars_used = array_rand($chars,3);
$array = array_merge($nums_used,$chars_used);
shuffle($array);
$z = implode('',$array);
echo $z;
?>

[redarrow]

thanks GingerRobot enjoying your demostration mate.......

[redarrow]

Hi there how comes you only use array_flip once but use array_rand twice is it becouse your merging the arrays together you only need the array_flip used once.........

[Ken2k7]

Hi there how comes you only use array_flip once but use array_rand twice is it becouse your merging the arrays together you only need the array_flip used once.........

Once for randomizing between the numbers 0-9 and selecting 3 numbers and then another to chars used array. Also you don't array_flip on an array of numbers :S

 

Also it's hard to index an array with letters using it's letters with the array of numbers given in the first array.

[Barand]

if you have PHP5, you could use your original code with

 

$h=str_split($i);

 

replacing your

 

$h=explode(' ',$i);

[GingerRobot]

Hi there how comes you only use array_flip once but use array_rand twice is it becouse your merging the arrays together you only need the array_flip used once.........

 

The array_rand() function returns the keys of the array, but we want the values. However, in the array of the numbers, the keys are identical to the values, so there's no need to use array_flip() on that array.

 

if you have PHP5, you could use your original code with

 

$h=str_split($i);

 

replacing your

 

$h=explode(' ',$i);

 

I was looking for that function.

[redarrow]

thank you all

 

solved