Php code with inverted alphabetic order and unchanged word order

How can an English statement reverse the alphabetic order of each word while the word order remains unchanged?

How can an English statement reverse the alphabetic order of each word while the word order remains unchanged?

Description of php interview questions:

Example: my name is fanglor = ym eman si orlgnaf

Php interview questions:

The Code is as follows:

Function restr ($ str)
{
$ Str1 = explode ('', $ str );
$ Str2 = '';
$ Temp = '';
For ($ I = 0; $ I {
$ Str2. = $ temp. strrev ($ str1 [$ I]);
$ Temp = '';
}
Return $ str2;

}

Test code:

The Code is as follows:

$ Str = "my name is fanglor ";
Echo restr ($ str );

Print result:
Ym eman si rolgnaf, website space, website space, Hong Kong server