Order array question

[zzz]

If I have an array of numbers

$myArray = array(5193,4428,6468,5203,1168,7279,7184,3160,6009,4623);

Is it possible to reorder array in such a way as to have a particular number to be the first value, ,3160?

[laserlight]

Yes, e.g., swap that number with the first.

[zzz]

Yes, this is what I need but I'm not sure how to do it. I was thinking I could do something like:

• remove my value from given array and then

  //somehow remove 
  $myValue
  // from 
  $myArray
  // possibly by using array_filter()?...
  

• build new array by adding together my value and the remaining of the array

  array_unshift($myArray, $myValue);
  

but it feels somewhat awkward. Is it?

[zzz]

What's the best way to remove a given value from an array?

[bradgrafelman]

[man]unset/man ? But if you want to do what laserlight said, then just use the common swap() function... e.g. in C++ you'd do:

template <class T> void swap ( T& a, T& b )
{
  T c(a); a=b; b=c;
}

so just make the PHP equivalent:

function swap(&$a, &$b)
{
    $c = $a; $a = $b; $b = $c;
}

and use it to swap elements in the array, e.g.:

swap($myArray[0], array_search(3160, $myArray)));

[zzz]

bradgrafelman;10953689 wrote:

so just make the PHP equivalent:

function swap(&$a, &$b)
{
    $c = $a; $a = $b; $b = $c;
}

I feel like I'm missing something very obvious... I'm not really sure how can I make a function when all I'm given is the array with numeric values and a single var like this:

$myArray = array(5193,4428,6468,5203,1168,7279,7184,3160,6009,4623); 
$myVar = 3160;

Sorry, I'm not a developer by training.

[zzz]

I am not sure if this method is faster or slower but here's what I came up with:

$myArray= array_diff($myArray,array($myVar));
array_unshift($myArray, $myVar); 

[bradgrafelman]

Woops, forgot a rather import bit of code in my post above... it should've been:

swap($myArray[0], $myArray[array_search(3160, $myArray)]));