Related content about php functions using a variable number of parameters

php supports variable number of parameter lists in user-defined functions.

In php5.5 and earlier versions, use thefunc_num_args(), func_get_arg(), func_get_args()function implementation.

Output:

1aArray( [0] => a )31Array( [0] => 1 [1] => 2 [2] => 3)2Array( [0] => d [1] => e )Array( [0] => Array ( [0] => d [1] => e ) [1] => Array ( [0] => f ) )

In php5.6 and above, you can use…Grammar implementation.

Example 1: Use...$args to replace any number of parameters

The output results are the same as php5.5 using func_num_args(), func_get_arg() , the func_get_args() function is consistent.


Example 2: Convert array to parameter list

Example 3: Partial parameters specified, others The number of parameters is variable

Output:

name:fdipzone tag:programmer args:Array( ) name:terry tag:designer args:Array( [0] => 1 [1] => 2) name:aoao tag:tester args:Array( [0] => Array ( [0] => a [1] => b ) [1] => Array ( [0] => c ) [2] => Array ( [0] => d ) )

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