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In those years, the PHP self-increment and self-subtraction operations we have pursued (1)_PHP Tutorial
- WBOYOriginal
- 2016-07-13 10:27:34980browse
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PHP doesn’t have many arithmetic symbols, but not all of them do you know how to use?
Here let’s talk about the upgraded version of PHP’s arithmetic symbols: ++, --, haha.
----------------------@chenwei
++ means self-increment,
-- That is, self-decreasing.
Practical application:
$a = 10; $a++ = ? //Use first and then add, the final result is 11
$a = 10; ++$a = ? //Add first and then use, the final result is 11
$a = 10;
$b = $a++ + ++$a;
echo $a;
echo $b; //Let’s do the math and I’ll reply with the answer
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http://www.cnblogs.com/farwish/p/3795614.html