Question: Why We Use === In Php?

What’s the difference between == and === PHP?

Introduction: Two of the many comparison operators used by PHP are ‘==’ (i.e.

equal) and ‘===’ (i.e.

identical).

The difference between the two is that ‘==’ should be used to check if the values of the two operands are equal or not.

On the other hand, ‘===’ checks the values as well as the type of operands..

What does === mean in coding?

What does === triple equal means. Just like double equal operator === also used to compare two values on left and right. This will also return true or false based on comparison. Triple equal operator is also common used in if else conditions, while loops and some other places in code.

IS NOT NULL in PHP?

The is_null() function checks whether a variable is NULL or not. This function returns true (1) if the variable is NULL, otherwise it returns false/nothing.

Which software is used in PHP?

NetBeans, the most widely used PHP IDE for PHP application development. This tool comes with all the rich features, which supports multiple languages. NetBeans was initially used for Java development, but the current version of this tool is lightweight, faster as well as supportive for PHP development services.

Why do we say I mean?

“I mean” is used as a transition from one confusing thing into a, hopefully, more clear thing. It’s used to suggest that the next thing the person is going to say will better explain something what was previously said.

What is the use of === in php?

The == operator just checks to see if the left and right values are equal. But, the === operator (note the extra “=”) actually checks to see if the left and right values are equal, and also checks to see if they are of the same variable type (like whether they are both booleans, ints, etc.).

Why would you use === instead of == in PHP?

You would use === to test whether a function or variable is false rather than just equating to false (zero or an empty string).

What === means?

Strict equality (===) means values which we are comparing must have the same type. This means “2” will not be equal to 2 (“2″===2 it will return false) Type converting equality (==) means automatically it will covert the variable to value irrespective of data type; either it is a string or a number.

What does ≡ mean in math?

In computer applications (like Excel) the symbols <> mean not equal. ≡ means identical to. … ≈ means approximately equal to, or almost equal to. The two sides of a relationship indicated by this symbol will not be accurate enough to manipulate mathematically.

What do three equal signs mean?

In mathematics, the triple bar is sometimes used as a symbol of identity or an equivalence relation (although not the only one; other common choices include ~ and ≈). Particularly, in geometry, it may be used either to show that two figures are congruent or that they are identical.

What does === mean in PHP?

Equal Operator == The comparison operator called Equal Operator is the double equal sign “==”. This operator accepts two inputs to compare and returns true value if both of the values are same (It compares only value of variable, not data types) and return a false value if both of the values are not same.

What does & mean in PHP?

ampersand, bitwiseIf your particular token is not listed below, you might find it in the List of Parser Tokens. & Bitwise Operators or References. What does it mean to start a PHP function with an ampersand? Understanding PHP & (ampersand, bitwise and) operator.

What is Var_dump function in PHP?

The var_dump() function dumps information about one or more variables. The information holds type and value of the variable(s).

Is PHP a dead language?

PHP isn’t quite dead, but it isn’t fully alive either — not in an independent manner like JavaScript is currently in the development ecosystem. The server-side language’s relationship with WordPress is an intimate one and rests on the platform’s long-term uptake by general users.

Are PHP files dangerous?

Every professional PHP developer knows that files uploaded by users are extremely dangerous. They can be used by attacker at backend as well as at frontend.