using the in_array function

[jbond]

Hello everyone,

I am trying to use the in_array function to determine whether a value is present or not. The array is passed as an argument to the function (see below)

 

function voeg_gsm_bij($gsmnummer,$array_of_num) {

if(in_array($gsmnummer,$array_of_num)){

    echo "Nummer bestaat reeds";

      } else {

    echo "Nummer niet gevonden in bestand";

      }

}

 

Although $gsmnummer and $array_of_num are known inside the function, the in_array doesn't pick up the var $gsmnummer in the $array_of_num.

When I run this manually with following values, the in_array routine performs correctly

 

$array_of_num=array("0476903056","0488990044");

if(in_array("0476903056",$array_of_num))

 

I am obviously missing something somewhere, but can't figure out what I am doing wrong. Specifying an array inside the function runs correctly, passing on an array in the function doesn't work ???

 

Can somebody please help??

 

Thanks + best regards

[Zyx]

The function works correctly. The most probable reason is that you misunderstand how it actually works. Check this out:

 

$array_of_num=array("0476903056","0488990044");
voeg_gsm_bij("0476903056",$array_of_num);

 

As expected, I get:

 

Nummer bestaat reeds

[jbond]

Hi Zyx,

thank you for your reply. No, I think I do understand how it works and if I do something similar to what you have coded, it works. The problem is that I want to work with variables that are passed on and that need to be examined by the in_array function.

Taking my previous example :

 

function voeg_gsm_bij($gsmnummer,$array_of_num) {

  if(in_array($gsmnummer,$array_of_num)){

      echo "Nummer bestaat reeds";

      } else {

      echo "Nummer niet gevonden in bestand";

      }

}

 

The function voeg_gsm_bij gets two parameters passed from another routine, i.e. the $gsmnummer (which is the number to be checked) and the $array_of_num which is in fact an array filled with numbers. I know that $array_of_num contains data because when I loop through it, it lists them on the screen correctly. So, in this array, the $gsmnummer exists, but the in_array reports it as "not found". So I am wondering whether using the function as I am trying to do yields any results. It seems to me as if the $array_of_num and the $gsmnummer are empty when using in_array($var1,$array1) ??

 

[jbond]

Figured it out.. Stupid mistake. When reading in the text file, forgot that there were two hidden characters behind every line (cr/lf), so instead of length of 10, length of string was 12.

Therefor the comparison never worked. I have now changed it and the in_array function works just fine as expected

 

B rgds