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  1. <?php
  2.  
  3. $teststring="αβγδεζηθΙκΛμ";
  4.  
  5. if (!preg_match("/^[A-ZA-zΑ-Ωα-ωίϊΐόάέύϋΰήώ0-9\- ]+$/", $teststring)) {
  6. 	echo "invalid char";
  7. }
  8. else {
  9.     echo "success";
  10. }
  11.  
Success #stdin #stdout 0.01s 20520KB
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stdin
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Standard input is empty
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success
https://ideone.com/Ylmh0H
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
public

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