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  1. <?php
  2.  
  3. $input = "meva, meves, teva, teVes, seva, seves";
  4.  
  5. echo preg_replace_callback("/(?:\b|_)(me|te|se)(?:(V|v))(a|es)(?:\b)/i",
  6. 	function ($match) {
  7. 		return $match[1] . ($match[2] == "V" ? "U" : "u") . $match[3];
  8. 	},
  9. 	$input);
Success #stdin #stdout 0.01s 20568KB
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stdin
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Standard input is empty
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meua, meues, teua, teUes, seua, seues
https://ideone.com/atbg3s
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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