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|
Ternary operator
-----
<?php
// ternary
$a ? $b : $c;
$a ?: $c;
// precedence
$a ? $b : $c ? $d : $e;
$a ? $b : ($c ? $d : $e);
// null coalesce
$a ?? $b;
$a ?? $b ?? $c;
$a ?? $b ? $c : $d;
$a && $b ?? $c;
-----
array(
0: Stmt_Expression(
expr: Expr_Ternary(
cond: Expr_Variable(
name: a
)
if: Expr_Variable(
name: b
)
else: Expr_Variable(
name: c
)
)
comments: array(
0: // ternary
)
)
1: Stmt_Expression(
expr: Expr_Ternary(
cond: Expr_Variable(
name: a
)
if: null
else: Expr_Variable(
name: c
)
)
)
2: Stmt_Expression(
expr: Expr_Ternary(
cond: Expr_Ternary(
cond: Expr_Variable(
name: a
)
if: Expr_Variable(
name: b
)
else: Expr_Variable(
name: c
)
)
if: Expr_Variable(
name: d
)
else: Expr_Variable(
name: e
)
)
comments: array(
0: // precedence
)
)
3: Stmt_Expression(
expr: Expr_Ternary(
cond: Expr_Variable(
name: a
)
if: Expr_Variable(
name: b
)
else: Expr_Ternary(
cond: Expr_Variable(
name: c
)
if: Expr_Variable(
name: d
)
else: Expr_Variable(
name: e
)
)
)
)
4: Stmt_Expression(
expr: Expr_BinaryOp_Coalesce(
left: Expr_Variable(
name: a
)
right: Expr_Variable(
name: b
)
)
comments: array(
0: // null coalesce
)
)
5: Stmt_Expression(
expr: Expr_BinaryOp_Coalesce(
left: Expr_Variable(
name: a
)
right: Expr_BinaryOp_Coalesce(
left: Expr_Variable(
name: b
)
right: Expr_Variable(
name: c
)
)
)
)
6: Stmt_Expression(
expr: Expr_Ternary(
cond: Expr_BinaryOp_Coalesce(
left: Expr_Variable(
name: a
)
right: Expr_Variable(
name: b
)
)
if: Expr_Variable(
name: c
)
else: Expr_Variable(
name: d
)
)
)
7: Stmt_Expression(
expr: Expr_BinaryOp_Coalesce(
left: Expr_BinaryOp_BooleanAnd(
left: Expr_Variable(
name: a
)
right: Expr_Variable(
name: b
)
)
right: Expr_Variable(
name: c
)
)
)
)
|
