Table of Contents
- 1 What is difference between != And !== In PHP?
- 2 What is difference between and $$ in PHP?
- 3 What is the difference between & and && in PHP?
- 4 What is session and cookies in PHP?
- 5 What is double in PHP?
- 6 What is the difference == and ===?
- 7 What is the difference between phpphp and HTML?
- 8 What is the difference between PHP and web browser?
What is difference between != And !== In PHP?
Operator != returns true, if its two operands have different values. Operator !== returns true, if its two operands have different values or they are of different types.
What is difference between and $$ in PHP?
The $var_name is a normal variable used to store a value. It can store any value like integer, float, char, string etc. On the other hand, the $$var_name is known as reference variable where $var_name is a normal variable.
What is the difference between & and && in PHP?
The difference is the precedence when we compare AND with && operator. The precedence of AND operator is lower than the operator = when the evaluation is performed, therefore even if both the operators do the same work, the result is different.
What is && operator in PHP?
PHP && Operator The logical operator && returns: TRUE only if both of its operands evaluate to true. FALSE if either or both of its operands evaluate to false.
What is the difference between and == and ===?
In one word, main difference between “==” and “===” operator is that formerly compares variable by making type correction e.g. if you compare a number with a string with numeric literal, == allows that, but === doesn’t allow that, because it not only checks the value but also type of two variable, if two variables are …
A session is a global variable stored on the server. Each session is assigned a unique id which is used to retrieve stored values. Whenever a session is created, a cookie containing the unique session id is stored on the user’s computer and returned with every request to the server.
What is double in PHP?
Floating point numbers ¶ Floating point numbers (also known as “floats”, “doubles”, or “real numbers”) can be specified using any of the following syntaxes: $a = 1.234; $b = 1.2e3; $c = 7E-10; $d = 1_234.567; // as of PHP 7.4.0.
What is the difference == and ===?
The difference between == and === is that: == converts the variable values to the same type before performing comparison. This is called type coercion. === does not do any type conversion (coercion) and returns true only if both values and types are identical for the two variables being compared.
What is the difference between == and === in PHP?
So for things like that, you would use the === instead, so that the data type is checked. In most programming languages, the comparison operator (==) checks, on the one hand, the data type and on the other hand the content of the variable for equality. The standard comparison operator (==) in PHP behaves differently.
How to compare two variables in PHP?
In most programming languages, the comparison operator (==) checks, on the one hand, the data type and on the other hand the content of the variable for equality. The standard comparison operator (==) in PHP behaves differently.
What is the difference between phpphp and HTML?
PHP vs HTML. HyperText Markup Language, widely known as HTML is the leading markup language for web pages. HTML is the basic building block of web pages. Web browser reads the HTML document and composes them into visual or audible web pages.
What is the difference between PHP and web browser?
Web browser reads the HTML document and composes them into visual or audible web pages. PHP (stands for PHP: Hypertext Preprocessor) is a server side scripting language, specially suited for developing dynamic and interactive web pages. PHP scripts can be embedded in to HTML documents. What is HTML?