Sixth _php Array (ii) _php tutorial

This essay is a summary of the predefined array variables. By using predefined array variables, we can obtain information such as System environment, user dialog, form data, and so on.

1. Server variable: $_server

Use the foreach statement to print all the elements in the $_server:

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  < span="">     < span="">(< span="">< span="">< span="">< span="">< span="">< c20>< span="">.'=< span="">'. < span="">.'
 < span="">  '  ?>< span="">    < span="">    < span=""> 

2. Environment variable: $_env(no output result)

　 3.GET variable: $_get

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  < span="">     < span="">(< span="">  < span=""> [' Submit '  < span=""> < span="">  < span="">  '
 < span="">    '< span=""> name :  '.< span="">   [' name '] < span=""> . '
 < span="">  '  < span="">  Age: '.< span="">     [' age '] < span=""> . '
 < span="">    '< span=""> hobby :  '.< span="">   [' hobby '] < span=""> . '
 < span="">  '  ?>< span="">    < span="">    < span=""> 

4.POST variable: $_post

When you pass data by post, the data is not displayed in the URL, so it is more secure than the Get method. Furthermore, there is no theoretical limit to the amount of data transmitted by post.

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  < span="">     < span="">(< span="">  < span=""> [' Submit '  < span=""> < span="">  < span="">  '
 < span="">    '< span=""> name :  '.< span="">   [' name '] < span=""> . '
 < span="">  '  < span="">  Age: '.< span="">     [' age '] < span=""> . '
 < span="">    '< span=""> hobby :  '.< span="">   [' hobby '] < span=""> . '
 < span="">  '  ?>< span="">    < span="">    < span=""> 

5. File Upload variable: $_files(incorrect code hint, unable to find the upload file)

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  < span="">     < span="">(< span="">  < span=""> [' Submit '  < span=""> < span="">  < span=""> [' Uplaod_file '] [' Error ']==upload_err_ok?  < span=""> ' Upload success!
': ' Upload failed!
 < span="">    '< span=""> upload file name: '.  < span="">   [' upload_file '] [' name '] < span=""> . '
 < span="">    '< span=""> upload file size: '.  < span="">   [' upload_file '] [' size '] < span=""> . ' Bytes
 < span="">    '< span=""> temp file name: '.  < span="">   [' upload_file '] [' tmp_name '] < span=""> . '
 < span="">  '  ?>< span="">    < span="">    < span=""> 

http://www.bkjia.com/PHPjc/626575.html www.bkjia.com true http://www.bkjia.com/PHPjc/626575.html techarticle This essay is a summary of the predefined array variables. By using predefined array variables, we can obtain information such as System environment, user dialog, form data, and so on. 1. Server variable: $_serv ...

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