1UVS isset() on temporaries 2----- 3<?php 4 5isset(([0, 1] + [])[0]); 6isset(['a' => 'b']->a); 7isset("str"->a); 8----- 9array( 10 0: Stmt_Expression( 11 expr: Expr_Isset( 12 vars: array( 13 0: Expr_ArrayDimFetch( 14 var: Expr_BinaryOp_Plus( 15 left: Expr_Array( 16 items: array( 17 0: ArrayItem( 18 key: null 19 value: Scalar_Int( 20 value: 0 21 ) 22 byRef: false 23 unpack: false 24 ) 25 1: ArrayItem( 26 key: null 27 value: Scalar_Int( 28 value: 1 29 ) 30 byRef: false 31 unpack: false 32 ) 33 ) 34 ) 35 right: Expr_Array( 36 items: array( 37 ) 38 ) 39 ) 40 dim: Scalar_Int( 41 value: 0 42 ) 43 ) 44 ) 45 ) 46 ) 47 1: Stmt_Expression( 48 expr: Expr_Isset( 49 vars: array( 50 0: Expr_PropertyFetch( 51 var: Expr_Array( 52 items: array( 53 0: ArrayItem( 54 key: Scalar_String( 55 value: a 56 ) 57 value: Scalar_String( 58 value: b 59 ) 60 byRef: false 61 unpack: false 62 ) 63 ) 64 ) 65 name: Identifier( 66 name: a 67 ) 68 ) 69 ) 70 ) 71 ) 72 2: Stmt_Expression( 73 expr: Expr_Isset( 74 vars: array( 75 0: Expr_PropertyFetch( 76 var: Scalar_String( 77 value: str 78 ) 79 name: Identifier( 80 name: a 81 ) 82 ) 83 ) 84 ) 85 ) 86) 87