What are the different PHP logical operators?
The standard logical operators and, or, not, and xor are supported by PHP. Logical operators first convert their operands to boolean values and then perform the respective comparison. is true if either $x or $y are true, but not both.
What is not in PHP?
Introduction to the PHP NOT operator In other words, the logical NOT operator returns true if the operand is false and returns false if the operand is true . PHP uses the both not keyword and ( ! ) to represent the logical NOT operator.
How do you say or in PHP?
The reason for the two different variations of “and” and “or” operators is that they operate at different precedences. (See Operator Precedence.)…Logical Operators ¶
| Example | Name | Result |
|---|---|---|
| $a or $b | Or | true if either $a or $b is true . |
| $a xor $b | Xor | true if either $a or $b is true , but not both. |
Which of the following is the the PHP logical operator for and ‘?
PHP Logical Operators
| Operator | Name | Example |
|---|---|---|
| and | And | $x and $y |
| or | Or | $x or $y |
| xor | Xor | $x xor $y |
| && | And | $x && $y |
Which one is a not PHP operator?
PHP Operators can be categorized in following forms: Arithmetic Operators. Assignment Operators….PHP Operators Precedence.
| Operators | Additional Information | Associativity |
|---|---|---|
| < <= > >= | comparison | non-associative |
| == != === !== <> | comparison | non-associative |
| & | bitwise AND | left |
| ^ | bitwise XOR | left |
What does a $$$ mean in PHP?
PHP | $ vs $$ operator The $ operator in PHP is used to declare a variable. In PHP, a variable starts with the $ sign followed by the name of the variable. For example, below is a string variable: Below program will illustrate the $ and $$ operator in PHP.
What is ternary operator PHP?
The ternary operator is a shortcut operator used for shortening the conditional statements. The order of operation of this operator is from left to right. It is called a ternary operator because it takes three operands- a condition, a result statement for true, and a result statement for false.
How do you end an if statement in PHP?
The if statement will end if none of its conditions evaluate to true or if one of its conditions evaluate to true . The statement(s) associated with the first true condition will evaluate, and the if statement will end. See Wikipedia’s If–then(–else) for more.
Which is not logical operator?
The NOT logical operator reverses the true/false outcome of the expression that immediately follows. The NOT operator affects only the expression that immediately follows, unless a more complex logical expression is enclosed in parentheses. You can substitute ~ or ¬ for NOT as a logical operator.
Which is a PHP operator?
PHP Operator is a symbol i.e used to perform operations on operands. In simple words, operators are used to perform operations on variables or values. For example: $num=10+20;//+ is the operator and 10,20 are operands.
What is $$$ in PHP?
PHP $ and $$ Variables. The $var (single dollar) is a normal variable with the name var that stores any value like string, integer, float, etc. The $$var (double dollar) is a reference variable that stores the value of the $variable inside it. To understand the difference better, let’s see some examples.
What is the use of logical operators in PHP?
The PHP logical operators are used to combine conditional statements. ! PHP has two operators that are specially designed for strings. . The PHP array operators are used to compare arrays. The PHP conditional assignment operators are used to set a value depending on conditions:
How many operators are there in PHP?
PHP divides the operators in the following groups: 1 Arithmetic operators 2 Assignment operators 3 Comparison operators 4 Increment/Decrement operators 5 Logical operators 6 String operators 7 Array operators 8 Conditional assignment operators More
What is the use of comparison operator in PHP?
PHP Comparison Operators The PHP comparison operators are used to compare two values (number or string): PHP Increment / Decrement Operators The PHP increment operators are used to increment a variable’s value.
What is the assignment operator in PHP?
PHP Assignment Operators. The basic assignment operator in PHP is “=”. It means that the left operand gets set to the value of the assignment expression on the right.