Ytukyg

please help me.
My function pick up keywords from string(text) and replace them with href tag, that working fine so far, but now I want (because expecting more then one keyword occurrence in string) replace each with random URL address from array, check out code to see what I want and what I get.
Thank you in advance!!

function replacekeywords($str, $search, $url_array) {



    $occurrences = substr_count(strtolower($str), strtolower($search));

    $newstring = $str;

    $match = array();



    for ($i=0;$i<$occurrences;$i++) {





        // !!!!!!!!!! how do I make $url here randomly based on $url_array?

        $url = $url_array[rand(0, count($url_array) - 1)]; 





        $match[$i] = stripos($str, $search, $i);

        $match[$i] = substr($str, $match[$i], strlen($search));

        $newstring = preg_replace("/b([a-z]*${match[$i]}[a-z]*)b/i","<a href='".$url."' class='link'>$0</a>",strip_tags($newstring,'<br><p>'));

    }



     return $newstring;

}



$url_array = array('https://google.com/somelink1', 'https://google.com/somelink2', 'https://google.com/somelink3'); 

$search = 'Whatever text here text also this is about text';

$str = 'text';

$output = replacekeywords($str, $search, $url_array);

Desired output:

Whatever <a href="https://google.com/somelink1">text</a> here <a href="https://google.com/somelink3">text</a> also this is about <a href="https://google.com/somelink2">text</a>

Actual output:

Whatever <a href="https://google.com/somelink2">text</a> here <a href="https://google.com/somelink2">text</a> also this is about <a href="https://google.com/somelink2">text</a>

preg_replace_callback() lets you apply a custom function to each match of a regular expression. It can be used to get the result you're looking for:

<?php

function replacekeywords($needle, $haystack, $urls) {

    $needle = preg_quote($needle);

    $result = preg_replace_callback(

        "/b($needle)b/",

        function($matches) use ($urls) {

            return $urls[random_int(0, count($urls)-1)];

        },

        $haystack

    );

    return $result;

}



$urls     = ['https://google.com/somelink1', 'https://google.com/somelink2', 'https://google.com/somelink3']; 

$haystack = 'Whatever text here text also this is about text';

$needle   = 'text';



echo replacekeywords($needle, $haystack, $urls);

Note of course that there's no allowance here to prevent duplicate entries; it's perfectly likely for at least two or even all three entries to be the same.