Basic PHP
What will be the output of the following code?
$foo = 'Bob';
$bar = &$foo;
$bar = "My name is $bar";
echo $bar;
echo $foo;

Error
My name is Bob Bob
My name is BobBob
My name is BobMy name is Bob

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Basic PHP
How does the identity operator === compare two values?

It bases its comparison on the C strcmp function exclusively
It returns True only if they are both of the same type and value
If the two values are strings, it performs a lexical comparison
It converts them to a common compatible data type and then compares the resulting values
It converts both values to strings and compares them

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