3v4l.org

run code in 300+ PHP versions simultaneously
<?php $oldstr1='<span style="font-family: Times New Roman; font-size: 12pt;">'; $oldstr2='</span>'; $newstr1='<input type="radio" value="1" name="choice">'; $newstr2="</input>"; $str='<span style="font-family: Times New Roman; font-size: 12pt;"></span>'; while (preg_match($oldstr1, $str) && preg_match($oldstr2, $str)) { $str = preg_replace($oldstr1,$newstr1, $str, 1); $str = preg_replace($oldstr2,$newstr2, $str, 1); } echo $str;
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
<<input type="radio" value="1" name="choice">><</input>>
preferences:
238.99 ms | 406 KiB | 357 Q