PHP Search and Replace String Randomly

Question

I have the 2 variables/strings below:

$article = ('Perfume is a mixture of fragrant word1 and aroma complexes, which can be applied to the human body, animals, word2, objects, and living spaces in order to give off a pleasant word3.');

$words = '{word1|word2|word3|word4|word5}';

What I need to do is to search $article for any words in $word and if found randomly replace the word found in $article with a random picked word from $word.

How can I do that please?

leave it this way and explode() it to create a dynamic array, this way you won't disturb $words format. You can also use array_rand(explode("|", $words)) — Ivan Yonkov
– Ivan Yonkov, Commented Sep 12, 2013 at 10:18

olimortimer · Accepted Answer · 2013-09-12 10:23:44Z

3

If you need to keep everything in the same format;

$article = ('Perfume is a mixture of fragrant word1 and aroma complexes, which can be applied to the human body, animals, word2, objects, and living spaces in order to give off a pleasant word3.');
$words = '{word1|word2|word3|word4|word5}';

$words = explode('|', str_replace(array('{', '}'), '', $words));

echo str_replace($words, $words[array_rand($words)], $article);

answered Sep 12, 2013 at 10:23

olimortimer

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davey · Accepted Answer · 2013-09-12 10:34:21Z

0

Create an array of $words. Get a random key of the array and str_replace the $article with the randomly chosen words.

$words = array('word1', 'word2', 'word3', 'word4');
$randkeyA = array_rand($words);
$randkeyB = array_rand($words);
echo str_replace($words[$randkeyA], $words[$randkeyB], $article);

edited Sep 12, 2013 at 10:34

answered Sep 12, 2013 at 10:17

davey

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3 Comments

olimortimer Over a year ago

This doesn't work, because you're replacing $words[$randkey] with $words[$randkey], so replacing the same word with itself

davey Over a year ago

Lol, you're right, editted my piece of code. It's still possible this way though the word is replaced by the same word. Your answer is better :)

olimortimer Over a year ago

Sorted ;) However, the OP says "$words has to be in the current format"

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