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<?php $url = 'htttp://www.foobar.de/slideshow?parms=11,22,33&something=else'; $newSlideNo = 44; $searchPattern = '/(.*\d*,\d*,)(\d*)(.*)/'; $replacePattern = sprintf('${1}' . $newSlideNo . '${3}'); var_dump(preg_replace($searchPattern, $replacePattern, $url));
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
string(61) "htttp://www.foobar.de/slideshow?parms=11,22,44&something=else"

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