func_array_diff_ukey.asp

W3Schools tutorial..web designing

  </tr>  
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<br />


<hr />

<h2>Tips and Notes</h2>

<p><b>Tip:</b> You can compare the first array with one array, or as many as you like.</p>
<p><b>Note:</b> Only the keys have to be the same to get a match, 
both in the automatic comparison and in the user-defined function.</p>
<hr />

<h2>Example 1</h2>

<table class="ex" cellspacing="0" border="1" width="100%">
  <tr>
    <td>
    <pre>&lt;?php
function myfunction($v1,$v2) 
{
if ($v1===$v2)
	{
	return 0;
	}
if ($v1&gt;$v2)
	{
	return 1;
	}
else
	{
	return -1;
	}
}
$a1=array(0=&gt;&quot;Dog&quot;,1=&gt;&quot;Cat&quot;,2=&gt;&quot;Horse&quot;);
$a2=array(3=&gt;&quot;Rat&quot;,1=&gt;&quot;Bird&quot;,5=&gt;&quot;Monkey&quot;);
print_r(array_diff_ukey($a1,$a2,&quot;myfunction&quot;));
?&gt; </pre>
    </td>
</tr>
</table>

<p>The output of the code above will be:</p>

<table class="ex" cellspacing="0" border="1" width="100%">
  <tr>
    <td>
    <pre>Array ( [0] => Dog [2] => Horse )</pre>
    </td>
</tr>
</table>
<br />
<hr />

<h2>Example 2</h2>

<p>How to assign more than two arrays to the function</p>

<table class="ex" cellspacing="0" border="1" width="100%">
  <tr>
    <td>
    <pre>&lt;?php
function myfunction($v1,$v2) 
{
if ($v1===$v2)
	{
	return 0;
	}
if ($v1&gt;$v2)
	{
	return 1;
	}
else
	{
	return -1;
	}
}
$a1=array(0=&gt;&quot;Dog&quot;,1=&gt;&quot;Cat&quot;,2=&gt;&quot;Horse&quot;);
$a2=array(3=&gt;&quot;Rat&quot;,1=&gt;&quot;Bird&quot;,5=&gt;&quot;Monkey&quot;);
$a3=array(6=&gt;&quot;Dog&quot;,7=&gt;&quot;Donkey&quot;,0=&gt;&quot;Horse&quot;);
print_r(array_diff_ukey($a1,$a2,$a3,&quot;myfunction&quot;));
?&gt; </pre>
    </td>
</tr>
</table>

<p>The output of the code above will be:</p>

<table class="ex" cellspacing="0" border="1" width="100%">
  <tr>
    <td>
    <pre>Array ( [2] => Horse )</pre>
    </td>
</tr>
</table>
<br />
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<a href="php_ref_array.asp"><img class="navup" src="../images/up.gif" alt="PHP Array Reference" border="0" /> Complete PHP Array Reference</a>

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