Select echo or dump according to the type of variable in php_PHP tutorial

At this point, the is_scalar built-in function comes in handy.

is_scalar -- Check whether the variable is a scalar

Scalar variables refer to those variables containing integer, float, string or boolean, while array, object and resource are not scalars.

Copy code The code is as follows:

function show_var($var) {
if (is_scalar($var)) {
echo $var;
} else {
var_dump($var);
}
}
$pi = 3.1416;
$proteins = array("hemoglobin", "cytochrome c oxidase", "ferredoxin");

show_var($pi);
// Print: 3.1416

show_var( $proteins)
// Print:
// array(3) {
// [0]=>
// string(10) "hemoglobin"
// [1 ]=>
// string(20) "cytochrome c oxidase"
// [2]=>
// string(10) "ferredoxin"
// }
?>

http://www.bkjia.com/PHPjc/325696.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/325696.htmlTechArticleAt this point, the is_scalar built-in function comes in handy. is_scalar -- Check whether a variable is a scalar. Scalar variables are those that contain integer, float, string or boolean, and...