ternary operator

If you compare a number with a string or a string that involves the content of a number, the string is converted to a value and compared to a value. This rule also applies to switch statements. When used or! During the comparison, no type conversion

Note: the ternary operator is a statement. Therefore, the result is not a variable but a statement. It is important to return a variable through reference. Return $ var42? $ A: $ B; will not work, and later PHP versions will be... Note: the

1, PHP recessive ternary operator (?:) Priority issues: Example 1:Copy the Code code as follows:$person = $who or $person = "laruence";is actually equivalent to:$person = Empty ($who)? "Laruence": $who;Example 2Copy the Code code as follows:$arr =

Front-end PHP operators, learn PHP operators DirectoryArithmetic operator assignment operator comparison operator ternary operator logical operator string operator error control operator increment decrement operator array operator Defined the

Asp tutorial. net ternary operatorsThe ternary operator is also a conditional operator. It seems special because it has three operands, but it does belong to one of the operators.The format isBoolean-exp? Value0: value1If the boolean-exp expression

Dark Horse programmer ---- java-based operators, keyboard input, if switch statements, related Interview Questions, ---- javaswitch ------ Java training, Android training, iOS training, and. Net training. We look forward to communicating with you! --

Arithmetic operators1. Arithmetic operators: +,-, *,/, and %.2. Increment/decrease operators: for example, $ a ++, $ a --, ++ $ a, -- $.For example: The code is as follows:Copy code $ A = 10;$ B = 5;$ C = $ a ++; // assign values first and then

A little insight (refer to the snow and the relevant information on the Internet): the difference between reference and replication: We all know that the reference is actually: $ a = 1; $ B = $; changing $ a or $ B does not affect the other party.

There are three PHP conditional control statements:First: if statement;Type 2: switch statement;Third: ternary operators;The three condition control statements are described respectively.First: if statement.The if syntax has the following formats:1 )

To find the meaning of ternary operator urgently function Meth () { $a =$_post["user"]; return isset ($a)? (Is_array ($a)? $a: Trim ($a): NULL; } Excuse me, what does this ternary operator mean in PHP? ------Solution-------------------- function

1.1 class nameThe class name (and the category, protocol name) should be capitalized, and the word will be split in hump format.1. Prefixes for classes1) All class names, enumerations, structures, and protocol are best defined with a uniform

The ternary operator's functionality is consistent with the "if....else" process statement, which is written in a single line, with a streamlined code and high execution efficiency. Using the ternary operator appropriately in a PHP program can make

The JavaScript operators mainly include: Arithmetic operators Assignment operator Comparison operators Ternary operator logical operators string concatenation operator Arithmetic operators operator

The trinocular operator is an important part of C language. The conditional operator is the only operator with three operands, also known as a ternary operator.In C-style languages, the ternary operator is in the following form:? : But there is no

Objective Process Control statement: In the process of executing a program, the order of execution of each statement has a direct effect on the result of the program. That is to say, the process of the program has a direct impact on the running

# # #03.01_java Language Basics (Basic usage of logical operators) (master)* A: What are logical operators* &,|,^,! Logic and & Logic or | Logical XOR ^ logical non!* &&,| | Logic double and && logic dual or | |* B: Case Demo* Basic usage of logical

Knowledge Essentials: operator (Master) keyboard entry (mastering) Flow control statement if statement (master)1: operator (master)(1) Arithmetic operatorsa:+,-, *,/,%,++,--b:+ usage A: addition B: Positive sign C: string connector c:/and% of the

Today we will talk about a small knowledge point, a ternary operator. As the name implies, A Trielement operation has three elements. Is the expression roughly composed of condition? Expr1: expr2; A statement adds two expressions. Before the

The content of this section is a bit dull, but very simple, remember, just like in elementary school we just learned subtraction mixed operation. Remember the priority of the operation. (Of course, if you have a C language or other basis, you can

Conditional executionIn the previous sections we described how to define data and perform basic operations, and in order to have a thorough understanding of the data, we introduced a binary representation of various types of data.Now, let's review