Specific method variable argument lists PHP function introduction

PHP function of the variable parameter list can be achieved by three functions _get_args (), func_num_args (), func_get_arg (). Below this we made a detailed introduction.

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Perhaps for PHP junior programmer for PHP functions are not fully skilled master. Implementation of variable argument lists PHP functions we introduce today is mainly the use of func_get_args (), func_num_args (), func_get_arg () function to achieve the three systems, in which func_get_args () function to get the list of arguments as an array specific usage see the manual.

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PHP function of the variable parameter list code is as follows:

 

1. < ?php  
2. /**  
3. * Multi function parameter list  
4. *  
5. */  
6. function multiArgs()  
7. {  
8. / ** Returns the list of arguments as an array * /  
9. $args = func_get_args();  
10. Number / parameter ** * /  
11. $args_num = func_num_args();  
12. foreach ( $args as $key => $value )  
13. {  
14. echo 'This is ',$key+1,'th argument:',$value,'<br/>';  
15. }  
16. echo 'Number of args is ',$args_num;  
17. }  
18. multiArgs('one','two','three');  
19. /** output */  
20. /**  
21. This is 1th argument:one  
22. This is 2th argument:two  
23. This is 3th argument:three  
24. Number of args is 3  
25. */  
26. ?> 

These are related to implementation of variable argument lists PHP functions.

Reproduced in: https: //www.cnblogs.com/zhangchenliang/p/3938342.html