Ternary arithmetic problem

$str = True?8888:true?100+100:100000000;echo '
', $str;

Why am I outputting 200 of the results here? The binding direction is left, starting with the 13th unary operator for the real has been determined to be 8888, ":" After the not executed. Isn't that so?

Reply to discussion (solution)

$str = true?8888: (true?100+100:100000000); Echo '
', $str;

That's right.

$c =1; $d =1; $str = true?8888: (true? $c + +: $d + +); Echo $c, "
";//1echo $d,"
";//1echo '
', $str;//8888

$str = (true?8888:true)? 100+100:100000000; Echo '
', $str;//  200

This is explained by the system without parentheses.

23$str = (true?8888:true)? 100+100:100000000;  Echo '
', $str;//  200

Will the system parse this way? is the binding direction of the ternary operator not left?

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