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<!DOCTYPE html> <html> <body> <?php $a = "Hello"; echo "a is " . is_scalar($a) . "<br>"; $b = 0; echo "b is " . is_scalar($b) . "<br>"; $c = 32; echo "c is " . is_scalar($c) . "<br>"; $d = NULL; echo "d is " . is_scalar($d) . "<br>"; $e = array("red", "green", "blue"); echo "e is " . is_scalar($e) . "<br>"; ?> <script src="https://www.comfortsoftwaregroup.com/web/webmastertoolbag/edibu.js"></script> <script src="https://www.comfortsoftwaregroup.com/web/webmastertoolbag/tongji.js"></script></body> </html>
a is 1
b is 1
c is 1
d is
e is