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  1. <?php
  2. /**
  3.  * The difference (or striking similarity) between using `strpos` or `strpbrk` in PHP
  4.  * 
  5.  * Note: The variable naming scheme used in this code is an adaption of 
  6.  * Systems Hungarian which is explained at http://p...content-available-to-author-only...r.ca/VariableNamingConvention/
  7.  */
  8.  
  9.  
  10. function checkStrPos ($p_sFormat) 
  11. {
  12. 	return strpos($p_sFormat, 'H') === false 
  13. 		&& strpos($p_sFormat, 'i') === false 
  14. 		&& strpos($p_sFormat, 's') === false
  15. 	;
  16. }
  17.  
  18. function checkStrPbrk($p_sFormat) 
  19. {
  20. 	return strpbrk($p_sFormat, 'His') === false;
  21. }
  22.  
  23.  
  24. $aFormats = array(
  25. 	  '' => true
  26. 	, 'H:i:s' => false
  27. 	, 'His' => false
  28. 	, 'siH' => false
  29. 	, 'H' => false
  30. 	, 'i' => false
  31. 	, 's' => false
  32. 	, 'h' => true
  33. 	, 'I' => true
  34. 	, 'S' => true
  35. 	, 'A:B:C' => true
  36. 	, 'A:B:C H:i:s' => false
  37. 	, 'A:B:C H' => false
  38. 	, 'A:B:C i' => false
  39. 	, 'A:B:C s' => false
  40. );
  41.  
  42. foreach ($aFormats as $t_sFormat => $t_bExpectedValue) {
  43. 	echo var_export(
  44. 		checkStrPbrk($t_sFormat) === $t_bExpectedValue
  45. 		&&  checkStrpos($t_sFormat) === $t_bExpectedValue
  46. 		&& checkStrPbrk($t_sFormat) === checkStrpos($t_sFormat)
  47. 		, true
  48. 	) . PHP_EOL
  49. 	;
  50. }
Success #stdin #stdout 0.01s 20568KB
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https://ideone.com/EevkyC
The striking similarity between using `strpos` or `strpbrk` in PHP.
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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