func_array_map.asp

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<p><b>Tip:</b> You can assign one array to the function, or as many as you like.</p>

<hr />

<h2>Example 1</h2>

<table class="ex" cellspacing="0" border="1" width="100%">
  <tr>
    <td>
    <pre>&lt;?php
function myfunction($v) 
{
if ($v===&quot;Dog&quot;)
	{
	return &quot;Fido&quot;;
	}
return $v;
}
$a=array(&quot;Horse&quot;,&quot;Dog&quot;,&quot;Cat&quot;);
print_r(array_map(&quot;myfunction&quot;,$a));
?&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] => Horse [1] => Fido [2] => Cat )</pre>
    </td>
</tr>
</table>
<br />
<hr />

<h2>Example 2</h2>

<p>Using the more than one parameter.</p>

<table class="ex" cellspacing="0" border="1" width="100%">
  <tr>
    <td>
    <pre>&lt;?php
function myfunction($v1,$v2) 
{
if ($v1===$v2)
	{
	return &quot;same&quot;;
	}
return &quot;different&quot;;
}
$a1=array(&quot;Horse&quot;,&quot;Dog&quot;,&quot;Cat&quot;);
$a2=array(&quot;Cow&quot;,&quot;Dog&quot;,&quot;Rat&quot;);
print_r(array_map(&quot;myfunction&quot;,$a1,$a2));
?&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] => different [1] => same [2] => different )</pre>
    </td>
</tr>
</table>
<br />
<hr />

<h2>Example 3</h2>

<p>Look what happens if you assign null as the functionname:</p>

<table class="ex" cellspacing="0" border="1" width="100%">
  <tr>
    <td>
    <pre>&lt;?php
$a1=array(&quot;Dog&quot;,&quot;Cat&quot;);
$a2=array(&quot;Puppy&quot;,&quot;Kitten&quot;);
print_r(array_map(null,$a1,$a2));
?&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] => Array ( [0] => Dog [1] => Puppy )
[1] => Array ( [0] => Cat [1] => Kitten )
) 
</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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