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UVS isset() on temporaries
-----
<?php
isset(([0, 1] + [])[0]);
isset(['a' => 'b']->a);
isset("str"->a);
-----
!!php7
array(
0: Expr_Isset(
vars: array(
0: Expr_ArrayDimFetch(
var: Expr_BinaryOp_Plus(
left: Expr_Array(
items: array(
0: Expr_ArrayItem(
key: null
value: Scalar_LNumber(
value: 0
)
byRef: false
)
1: Expr_ArrayItem(
key: null
value: Scalar_LNumber(
value: 1
)
byRef: false
)
)
)
right: Expr_Array(
items: array(
)
)
)
dim: Scalar_LNumber(
value: 0
)
)
)
)
1: Expr_Isset(
vars: array(
0: Expr_PropertyFetch(
var: Expr_Array(
items: array(
0: Expr_ArrayItem(
key: Scalar_String(
value: a
)
value: Scalar_String(
value: b
)
byRef: false
)
)
)
name: a
)
)
)
2: Expr_Isset(
vars: array(
0: Expr_PropertyFetch(
var: Scalar_String(
value: str
)
name: a
)
)
)
)