A 'heterogeneous' syntax in PHP: $a && $b = $c;

A "heterogeneous" syntax in php: $a && $b = $c;

$a = 1;
$b = 2;
$c = 3;
$a && $b = $c;
echo "a:$a";
echo "b:$b";
echo "c:$c";
This is
a:1
b:3
c:3
$a = 0;
$b = 2;
$c = 3;
$a && $b = $c;
echo "a:$a";
echo "b:$b ";
echo "c:$c";
This is
a:0
b:2
c:3

Analysis:

1: The priority of && and the assignment operator "=" is && has a higher priority, but in the red writing method, $a and $b are not ANDed first and then =$c. This understanding is equivalent to 1=$c, and 1=$c is wrong to write

2: The correct way to understand this alternative way of writing is:

if($a){$b = $c}, that is, if $a If it is true, the assignment statement $b = $c will be executed; otherwise, the assignment statement will not be executed, so the result is not difficult to understand

The above introduces a "heterogeneous" syntax in PHP: $a && $b = $c;, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.