QQ space background music player code Difference between JS and PHP in passing variable parameters to functions Example code

# JS method of calling functions to pass variable parameters

Copy code The code is as follows:

<script> <br>function test() { <br>　 for(var i = 0;i < arguments.length; i++ ) { <BR>　 alert(arguments[i]); <BR>　} <BR>} <BR>//Call function <BR>test(1, 2, 3, 'abc'); <BR></script>

# PHP calls function passing variable Parameter method

Copy codeThe code is as follows:

　　 //Method 1
　 //Receive a series of parameters and output them one by one
　 function show_params () {
　　　 // Get the passed parameters Number
　　$count = func_num_args();
　　 //Traverse the parameters and output them one by one
　　 for ($i = 0; $i < $count; $i++) {
　　　　 //Get the parameters
　　 $param = func_get_arg($i ); C Echo $ Param. PHP_EOL;
}}}
// Call the function
show_params (1, 2, 'apple', 3.14); Array of
　　$params = array();
　　 //Get all parameters
　　$params = func_get_args();
　　$count = count($params); $i < $count; $i++) {
　　　echo $params[$i];
　　　echo PHP_EOL;
　　}
　　}
　//Note: Method 2 executes slower than method 1


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