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