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

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

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 that && has a higher priority, but in the red writing method, $a and $b do not do the AND operation first and then =$c. This understanding is equivalent to 1=$c, And the way of writing 1=$c is wrong 2: The correct way to understand this alternative writing method is: if($a){$b = $c}, that is, if $a 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

http://www.bkjia.com/PHPjc/1140578.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1140578.htmlTechArticleA heterogeneous syntax in php: $a $b = $c;, a "heterogeneous" syntax in php heterogeneous php ：$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...