What function in PHP allows you to find the position of the first occurrence of a substring?

PHP provides the goto in the latest version.

How do you connect mysql with the use of PHP5 new functions?

Which variable is not related to file upload?

What's the output sayHello($c);

$table = array('old_value'); foreach($table as $row) { $row='new_value'; } echo $table[0]; will produce:

What will show next code: $data = new stdClass; $data->var1 = 'word' $data->var2 = 'text' print_r( json_decode( json_encode($data), true ) );

What's the result of $b ? $a = 3; $b = &$a; $a = $a*4; echo $b;

What's the output? $array = array('dog','cat','pig'); $str = ' ' ; foreach($array as $value){ $value .= $value . $str; } print_r($array);;

What's the output? $a = true; var_dump($a);

In PHP, the die() and exit() functions do the exact same thing.