Re: str_replace
| From: | Jim Lucas | Date: | Mon, 25 Apr 2011 19:45:17 +0000 |
| Subject: | Re: str_replace | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-312483@lists.php.net to get a copy of this message | ||
On 4/24/2011 8:44 AM, Ron Piggott wrote:
>
> I am trying to figure out a syntax that will replace each instance of % with a
> different letter chosen randomly from the string $puzzle_filler. $puzzle_filler
> is populated with the letters of the alphabet, roughly in the same ratio as they
> are used.
>
> This syntax replaces each instance of % with the same letter:
>
> $puzzle[$i] = str_replace ( "%" , ( substr ( $puzzle_filler , rand(1,98) , 1 ) )
> , $puzzle[$i] );
>
> Turning this:
>
> %ECARBME%TIPLUP%%%%%%%E%%
>
> Into:
>
> uECARBMEuTIPLUPuuuuuuuEuu
>
> Is there a way to tweak my str_replace so it will only do 1 % at a time, so a
> different replacement letter is selected?
>
> This is the syntax specific to choosing a replacement letter at random:
>
> substr ( $puzzle_filler , rand(1,98) , 1 );
>
> Thanks for your help.
>
> Ron
>
> The Verse of the Day
> “Encouragement from God’s Word”
> http://www.TheVerseOfTheDay.info
>
How about something simple like this?
<?php
$input = '%ECARBME%TIPLUP%%%%%%%E%%';
$random_chars = range('a', 'z');
echo 'Before: '.$input.PHP_EOL;
while ( ($pos = strpos($input, '%') ) !== false )
$input[$pos] = $random_chars[array_rand($random_chars)];
echo 'After: '.$input.PHP_EOL;
?>