What is the correct PHP command to use to catch any error messages within the code?

Which cryptographic functions in PHP returns the longest hash value?

What's the output?

What's the output ?

Correct syntax of mail() function in PHP?

What does this output? $pos =strpos('Atlanta', 'a');echo $pos;

Correct PHP command to use to catch any error messages within the code?

Which function will suitably replace „X' if the size of a file needs to be checked? $size=X(filename);

Can php use gettext ?

Does PHP 5 support exceptions?

What's the output?