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  1. <?php
  2.  
  3. $str = [
  4. 	'categories_widget-__i__',
  5. 	'categories_widget-10',
  6. 	'categories_widget-test-extra-hyphens-...'
  7. ];
  8.  
  9. function stripFn($str){
  10.     return substr($str, 0, strrpos($str, '-'));
  11. }
  12.  
  13. echo stripFn($str[0]), PHP_EOL,
  14.      stripFn($str[1]), PHP_EOL,
  15.      stripFn($str[2]);
Success #stdin #stdout 0.01s 20520KB
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Standard input is empty
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categories_widget
categories_widget
categories_widget-test-extra-hyphens
https://ideone.com/1wgWCF
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
secret

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