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What will be the following script output?

<?php
$a = 1;
$a = $a— + 1;
echo $a;
?>

A. 2
B. 1
C. 3
D. 0
E. Null

Answer B is correct.

php question

Submitted by sunil kumar (not verified) on Sun, 08/30/2009 - 22:11.

I want to combine two variables together: $var1 = 'Welcome to '; $var2 = 'TechInterviews.com'; What will work faster? Code sample 1: $var 3 = $var1.$var2; Or code sample 2: $var3 = "$var1$var2";

code sample 1 works faster.

Submitted by Muthu (not verified) on Mon, 02/22/2010 - 11:37.

code sample 1 works faster. Because concatenation of strings works faster than substitution..

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