PHP7 New Operator Usage Example analysis

This example describes the PHP7 new operator usage. Share to everyone for your reference, as follows:

NULL merge operator

is actually the transformation of the ternary operator, reducing the amount of code

Original practice//$lig = Isset ($_get[' Lig ') "$_get[' Lig ']: ' bee '; $lig = $_get[' Lig ']?? ' Bee '; echo $lig;

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Spaceship operator (combination comparer)

The essence is the size of the comparison, but compared to the ' < ', ' > ' return value more than 1, and Java string comparison CompareTo () function similar

<?phpecho 1<=>1.1;print (PHP_EOL);//Line break echo "<br>";p rint (1.1<=>1); echo "<br>"; Echo 1< = ' 1 ';

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I hope this article is helpful to you in PHP programming.