Does PHP have short-circuit evaluation?

by

Yes, the PHP interpreter is “lazy”, meaning it will do the minimum number of comparisons possible to evaluate conditions.

If you want to verify that, try this: 

function saySomething()
{
    echo 'hi!';
    return true;
}

if (false && saySomething())
{
    echo 'statement evaluated to true';
}

More Related Contents:

  1. Sign in form always showing "Wrong Credentials"
  2. Php condition doesn't work for html [closed]
  3. Php if($var) used to work [closed]
  4. Parse error: syntax error, unexpected ‘else’ (T_ELSE) in C:\xampp3\htdocs\wb_html\login.php on line 8 [duplicate]
  5. Parse error: syntax error, unexpected ‘;’ [closed]
  6. Why is PHP printing variables used in if statement?
  7. About if else statement [closed]
  8. How to check if username already registered
  9. PHP – Change value y,n in database [closed]
  10. PHP If Statement with Multiple Conditions
  11. if statement in the middle of concatenation? [closed]
  12. PHP – If/else, for, foreach, while – without curly braces?
  13. Check whether $_POST-value is empty
  14. check if variable empty
  15. Case insensitive string comparison
  16. Using if(isset($_POST[‘submit’])) to not display echo when script is open is not working
  17. Which is Faster and better, Switch Case or if else if?
  18. PHP: Check if variable exist but also if has a value equal to something
  19. What are the differences between backtick and single quote? Can I use IF statement in a query as above?
  20. How to check for null in Twig?
  21. Simpler way to check if variable is not equal to multiple string values?
  22. PHP short circuit lazy evaluation, where is it in the php.net manual?
  23. PHP check value against multiple values with OR-operator
  24. Type-juggling and (strict) greater/lesser-than comparisons in PHP
  25. Undefined index with PHP sessions
  26. break out of if and foreach
  27. New containing div after every 3 records
  28. endforeach in loops?
  29. Why does (0 == ‘Hello’) return true in PHP?
  30. Reopening a session in PHP

Leave a Comment