Php-1 for java software engineers-dynamic data types

Java programmers learn php -- 1. dynamic Data Type 1. the data types in php are dynamic and do not need to declare variables before using the variables, such as & nbsp; $ var = 0; 2. the data types of variables in php can be changed at runtime. for example, you can assign values as follows: & nbsp; $ var = 5; & java programmers learn php -- 1. dynamic data type
1. the data types in php are dynamic and do not need to declare variables before using the variables, as shown in
$ Var = 0;

2. the data types of variables in php can be changed at runtime. for example, you can assign values as follows:
$ Var = 5;
$ Var = 'abc ';
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