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  1. <?php
  2.  
  3.  
  4. $array=["a","b","c","d","e","f","g","h","i","j"];
  5. $long_string="yada yada yada yada yada....";
  6. $rx = "[" . implode("", $array) . "]";
  7. //echo $rx . "\n";
  8. echo preg_replace('/'.$rx.'/', '$0!', $long_string);
Success #stdin #stdout 0.01s 52488KB
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Standard input is empty
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ya!d!a! ya!d!a! ya!d!a! ya!d!a! ya!d!a!....
https://ideone.com/2dhrK3
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
secret

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