Printing more than one array using print_r or any other function in php

arrays, php, printf, var-dump

Solution

Dumping the Variables

You can pass multiple arrays into `var_dump()`.

var_dump( $array, $array2, $array3 );

For instance, the following:

$array = array("Foo", "bar");
$array2 = array("Fizz", "Buzz");

var_dump( $array, $array2 );

Outputs this:

array(2) { [0]=> string(3) "Foo" [1]=> string(3) "bar" }
array(2) { [0]=> string(4) "Fizz" [1]=> string(4) "Buzz" }

Note how it keeps both arrays distinct in the output as well.

Function with n-arguments

You could also use a function, calling upon `func_get_args()` for the arrays passed in:

function logArrays() {
  $arrays = func_get_args();
  for ( $i = 0; $i < func_num_args(); $i++ )
    printf( "Array #%d is %s", $i, print_r($arrays[$i], true) );
}

logArrays( $array, $array2 );

Which, in this case, would output the following:

Array #0 is Array ( [0] => Foo  [1] => bar  )
Array #1 is Array ( [0] => Fizz [1] => Buzz )

Using `json_encode()` instead of `print_r` would output a slightly more readable format:

Array #0 is ["Foo","bar"]
Array #1 is ["Fizz","Buzz"]

Problem

I need to print contents of multiple arrays in my code. Eg ``` function performOp($n, $inputArr, $workArr) { printf("Entered function, value of n is %d", $n); print_r($inputArr); print_r($workArr); $width =0; } ``` Now, Instead of writing print_r twice, is there any way I can write a single statement and print both the arrays ? Also, If I want to print "Input array value is " before displaying the Array{}, is there a way to do so using printf or any other function? I tried writing ``` printf("Value of inputArray is %s ", print_r($inputArr) ``` , but this would not work. Any help is really appreciated. Thanks

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