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  1. <?php
  2.  
  3. $file    = '[STRING_****]  (STRING_*****)  /STRING';
  4.  
  5. $searchContext  = 'STRING';
  6. $replaceContext = 'NEW_STRING';
  7.  
  8. $pattern = '/([\[(\s])('.$searchContext.')/';
  9.  
  10. $result = preg_replace($pattern, "$1" . $replaceContext, $file);
  11. echo $result;
Success #stdin #stdout 0.01s 82944KB
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Standard input is empty
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[NEW_STRING_****]  (NEW_STRING_*****)  /STRING
https://ideone.com/tjXR7e
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
secret

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