How to split string and create a random words in php

Question

I want to suggest possible words to my clients like this :

t.est te.st tes.t te.st tes.t t.e.s.t

Now my code would be ?

<?php 

$string = "test";
$array = str_split($string);

foreach($array as $letter){
    echo $letter.".";
}

php.net/array_shuffle and then some conditional logic/looping to "sprinkle" the . throughout the shuffled characters. — Marc B
– Marc B, Commented Apr 4, 2014 at 16:44
It doesn't seem like he wants to shuffle the characters though? All of his examples had them in order... — Andrew Whatever
– Andrew Whatever, Commented Apr 4, 2014 at 16:49
I have a really convoluted method in my head that is probably far from the best but... here goes. You get the character count of your string (let's call it x) and then do 2^x-1 to get the amount of permutations you will need (let's call it y.) For instance, a 3 character string would be 2^2 or 4 permutations... dog, d.og, do.g, d.o.g (make sense so far?) Then you do a z=0 while z<y loop... so if our y is 4 we will loop through the ints 0, 1, 2, and 3. (More in next comment...) — Andrew Whatever
– Andrew Whatever, Commented Apr 4, 2014 at 16:58
Ok so then within the loop you convert your integers to binary... so in this example you will loop through 00, 01, 10, 11. And... that binary basically tells you whether you put a dot after a character or not. 00 = dog, 01 = do.g, 10 = d.og, 11 = d.o.g so... yeah. This will work, it's just uber convoluted. — Andrew Whatever
– Andrew Whatever, Commented Apr 4, 2014 at 17:00

Vagabond · Accepted Answer · 2014-04-04 17:39:25Z

2

I hope this is solves your problem:

$string = "test";
$array = str_split($string);


$len = strlen($string);    
$rand_indx = mt_rand(0,$len);


if ($rand_indx == $len) {
    $array[$rand_indx] = ".";
} else {
    for ($x=$len; $x > $rand_indx; $x--) {
        $array[$x] = $array[$x-1];
    }
    $array[$rand_indx] = ".";
}

foreach($array as $letter){

    echo $letter;
}

edited Apr 4, 2014 at 17:39

answered Apr 4, 2014 at 17:23

Vagabond

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2 Comments

Andrew Whatever Over a year ago

The 4s should probably be strlen($string) to make it work with any string.

Vagabond Over a year ago

Absolutely... That would definitely give it more flexibility.

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