Can you use or in php?
There's some joking, and misleading comments, even partially incorrect information in the answers here. I'd like to try to improve on them: Show First, as some have pointed out, you have a bug in your code that relates to the question:
should be (note the
which in this case is functionally equivalent to
Second, note that these operators
( Third, the real difference between Modified examples from PHP's page on logical operators:
will evaluate to
however
will assign
The fact that this ambiguity even exists makes a lot of programmers just always use Some languages like Perl use this kind of construct frequently in a format similar to this:
This would theoretically assign the database connection to Some languages that allow for this construct straight out forbid assignments in conditional/logical statements (like Python) to remove the amiguity the other way round. PHP went with allowing both, so you just have to learn about your two options once and then code how you'd like, but hopefully you'll be consistent one way or another. Whenever in doubt, just throw in an extra set of parenthesis, which removes all ambiguity. These will always be the same:
Armed with all that knowledge, I prefer using
PHP If condition can be compound condition. So, we can join multiple simple conditions with logical OR operator and use it as condition for PHP If statement. In this tutorial, we will go through the syntax of using OR operator in If-statement and some examples to understand the usage. The syntax of If-statement with OR logical operator is where
Since we are using OR operator to combine the condition, PHP executes if-block if at least one of the condition_1 and condition_2 is true. If both the conditions are false, then PHP does not execute if-block statement(s). Example – PHP If with OR OperatorIn this example, we will write an if statement with compound condition. The compound condition contains two simple conditions and these are joined by OR logical operator. PHP Program Output
ConclusionIn this PHP Tutorial, we learned how to write PHP If statement with AND logical operator. Can you use or in an if statement PHP?PHP If OR. PHP If condition can be compound condition. So, we can join multiple simple conditions with logical OR operator and use it as condition for PHP If statement.
What does || mean in programming?Logical OR operator: ||
The logical OR operator ( || ) returns the boolean value true if either or both operands is true and returns false otherwise. The operands are implicitly converted to type bool before evaluation, and the result is of type bool . Logical OR has left-to-right associativity.
What is XOR operator in PHP?PHP Xor Operator
In PHP, the logical operator xor stands for exclusive or. It takes two different boolean values or expressions as its operands and returns a single boolean value. xor evaluates to TRUE only if either its left operand or its right operand evaluate to TRUE , but not both.
What is the => operator in PHP?What is => in PHP? This is referred to as the double arrow operator. It is an assignment operator used in the creation of associative arrays. It is placed in between the array key and its value.
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