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PHP Functions

PHP Functions
The below statement will return.$Var = substr(""abcdef"", -4, 1);

returns "c"
returns "cd"
returns "f"
returns "d"

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PHP Functions
What will be the output of the following PHP code?
function sum($num1, $num2) {
$total = $num1 + $num2;
echo "cos($total)";
}
sum(5,-5);

1
-0.5
0.5
0

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PHP Functions
What will be the output of the following PHP code?
function sum($num1, $num2) {
$total = $num1 + $num2;
echo "chr($total)";
}
$var1 = "sum";
$var1(5, 44);

49
1
Error
Sum

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PHP Functions
What will be the output of the following PHP code?
echo ucwords("i love my country");

i love my Country
I Love My Country
I love my country
I love my Country

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PHP Functions
Above usleep() function pauses PHP for .usleep(1000000);

10 seconds
100 microseconds
1 second
1 microseconds

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PHP Functions
What will be the output of the following PHP code?
function a() {
function b() {
echo 'I am b';
}
echo 'I am a';
}
b();
a();

I am b
Error
I am a Error
I am bI am a

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