3v4l.org

run code in 300+ PHP versions simultaneously
<?php $buff='سلامی به گرمي آشنایی'; echo $buff, PHP_EOL; $buff = str_replace("ی","ي",$buff); $buff = str_replace("ک","ك",$buff); echo $buff;
Output for 4.3.10 - 4.3.11, 4.4.0 - 4.4.9, 5.0.2 - 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 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 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 - 8.3.6
سلامی به گرمي آشنایی سلامي به گرمي آشنايي
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
سلامی به گرمي آشنایی Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/tOgmj on line 3 PHP_EOLسلامي به گرمي آشنايي
preferences:
258.86 ms | 402 KiB | 346 Q