the code “ : ” in php

Question

I\'m curious to know what the syntax \" : \" mean in php I\'ve seen it a couple of times but I can\'t seem to explain it to myself. Can you also use it in a sentence....or i

Answer 1

The ?: operator is a ternary operator called the conditional operator.

It is conditional because the expressions expr2 and expr3 in expr1 ? expr2 : expr3 are evaluated based on the evaluated return value of expr1:

• If expr1 evaluates to true, expr2 is evaluated and the return value of expr2 is the return value of the whole ?: operator expression;
• otherwise expr3 is evaluated and the return value of the ?: operator expression is the return value of expr3.

Here’s an example:

echo 1 == 1 ? "true" : "false";

If 1 == 1 evaluates to true, "true" will be echoed, otherwise "false".

Note that the ?: operator is just a and not the ternary operator. The word ternary just means that there are three operands (op1 ? op2 : op3) just like a binary operator has two operands (e.g. op1 + op2, op1 / op2, op1 % op2, etc.) and unary operators just have one operand (e.g. !op, -op, ~op, etc.).