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  1. <?php
  2.     $num = '+ 79--35(- 358741()3';
  3.     $numClean = preg_replace ('/[)(\s+-]*/',"",$num);
  4.     if (mb_strlen($numClean)>11){ 
  5.     	exit ("THIS IS A MISTAAAKE");
  6.     }
  7.      $finishedNum = preg_replace ('/^[7]/',8,$numClean);
  8.     echo "$finishedNum";
Runtime error #stdin #stdout #stderr 0.01s 82624KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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PHP Fatal error:  Uncaught Error: Call to undefined function mb_strlen() in /home/mV7osL/prog.php:4
Stack trace:
#0 {main}
  thrown in /home/mV7osL/prog.php on line 4
https://ideone.com/xMO55G
language:
PHP (php 7.3.5)
created:
6 years ago
visibility:
public

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