What is the PHP language structure? I have seen echo, die, and nbsp are PHP language structures. Who can give me a better image? I have a better understanding of PHP. Thank you very much. To be honest, you don't need to figure it out. just remember that they & nbsp; do not return values. what is the PHP language structure that cannot be used to return values?
When I was a beginner in PHP, I saw echo. die is a PHP language structure.
Who can give me a better image? I have a better understanding of PHP.
Thank you very much.
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To be honest, you don't need to figure it out, as long as you remember that they do not return values and cannot be used in situations where they need to return values.
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Language structure functions
Most of them do not return values, either or not.
Most of the statements that can be used must be called using functions.
Most of them are keywords, not keywords.
Most of the corresponding opcode does not have opcode
The source code is not defined by the PHP_FUNCTION macro. the source code is defined by the PHP_FUNCTION macro.
That is to say, the language structure is part of the php syntax.
The function is just a function ......
Reference:
When I was a beginner in PHP, I saw echo. die is a PHP language structure.
Who can give me a better image? I have a better understanding of PHP.
Thank you very much.
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The language structure is actually the source of php and involves very little content. Common examples include sequence, branch, and loop.
For example, echo die, if else break, etc.
In fact, you don't need to care about this concept. you only need to know how to use this statement, and use it in any scenarios.
In the future, when you write a program, no one cares that you are using a language structure or function. what you want is basically the final result.
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Agree with the opinion above
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To put it bluntly, the php System keyword is the php language structure. common obfuscation: echo, print, array, die, isset, unset, empty, require, list, and empty. remember that these interviews are sufficient!
