Invalid namespace names
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<?php namespace self;
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Cannot use "self" as namespace name as it is reserved on line 1
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<?php namespace parent;
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Cannot use "parent" as namespace name as it is reserved on line 1
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<?php namespace static;
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Syntax error, unexpected T_STATIC, expecting T_STRING or T_NS_SEPARATOR or '{' on line 1
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<?php use A as self;
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Cannot use "A" as "self" because "self" is a special class name on line 1
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<?php use B as parent;
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Cannot use "B" as "parent" because "parent" is a special class name on line 1
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<?php use C as static;
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Syntax error, unexpected T_STATIC, expecting T_STRING on line 1