strong/weak type vs static/dynamic type

[distums]

• Static/Dynamic typing is about when type information is aquired (Either at compiletime or at runtime)

静态/动态类型表示变量是否与类型绑定

String str = "Hello";  //statically typed as string
str = 5;               //would throw an error since java is statically typed

str = "Hello" # it is a string
str = 5       # now it is an integer; perfectly OK

• Strong/Weak typing is about how strictly types are distinguished (e.g. whether the language tries to do implicit conversion from strings to numbers).

强/弱类型表示是否允许类型间的隐式转换

str = 5 + "hello" 
# would throw an error since it does not want to cast one type to the other implicitly. 

$str = 5 + "hello"; // equals 5 because "hello" is implicitly casted to 0 
// PHP is weakly typed, thus is a very forgiving language.