What does !== Mean in PHP?
!== checks the type of the variable as well as the value. So for example, $a = 1; $b = ‘1’; if ($a != $b) echo ‘hello’; if ($a !==
What is the use of $$ in PHP?
What does $$ (dollar dollar or double dollar) means in PHP ? The $x (single dollar) is the normal variable with the name x that stores any value like string, integer, float, etc. The $$x (double dollar) is a reference variable that stores the value which can be accessed by using $ symbol before $x value.
What does a $$$ 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 the meaning of * in PHP?
PHP Arithmetic Operators
|*||Multiplication||Product of $x and $y|
|/||Division||Quotient of $x and $y|
|%||Modulus||Remainder of $x divided by $y|
|**||Exponentiation||Result of raising $x to the $y’th power|
What is an array in PHP?
An array in PHP is actually an ordered map. A map is a type that associates values to keys. This type is optimized for several different uses; it can be treated as an array, list (vector), hash table (an implementation of a map), dictionary, collection, stack, queue, and probably more.
What is PHP and its syntax?
The PHP syntax and semantics are the format (syntax) and the related meanings (semantics) of the text and symbols in the PHP programming language. They form a set of rules that define how a PHP program can be written and interpreted.
What are PHP variables?
What is Variable in PHP. Variables are used to store data, like string of text, numbers, etc. … PHP automatically converts the variable to the correct data type, depending on its value. After declaring a variable it can be reused throughout the code. The assignment operator ( = ) used to assign value to a variable.
What is double in PHP?
There is no difference in PHP. float , double or real are the same datatype. At the C level, everything is stored as a double . The real size is still platform-dependent.
What are operators in PHP?
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 symbol called in PHP?
Hello @kartik, The @ symbol is the error control operator (“silence” or “shut-up” operator). It makes PHP suppress any error messages (notice, warning, fatal, etc) generated by the associated expression. It works just like a unary operator, for example, it has a precedence and associativity.