How to abbreviate IF judgment in PHP

This article mainly introduces how to abbreviate IF judgment in PHP, which has certain reference value. Now I share it with everyone. Friends in need can refer to it

The first type: IF conditional statement

Second type: ternary operation

Third type: conditional statement composed of && and ||

First type: IF Needless to say, this is the basis, I believe it Most people will;

Second: c=a>b? true:false //Means: If a>b is true, return true, otherwise return false (of course it can be replaced with a statement) , And return the result to C;

3:

1, &&

## In most languages, he means and of Both sides are true, using PHP as an example, it is used in the tradition;

if ($a>0 && $b>0){   
     //语句；   
}

Execute the statement when both are true;

However, today we will use it as a conditional statement; For example, there is a traditional conditional statement below:

if ($a>0){
    $b='This is test';
}

When the condition is true, the statement in it will be executed; but it is too troublesome to write this way, we can write it directly like this:

$a>0 && ($b='This is test');

The computer will first determine whether $a is true. If so, the following statements will be executed. If not, there is no need to execute the following statements;

Benefits: 1. It can be written in one line,

  2. Omit the code; || Of course it is possible, but the order of execution is different.

$a>0 || ($b='This is test'); No: Execute;

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