The html->tagValue function is useful for pulling a specific value out
of the data array based on a path string. But why is this limited to
the data array and why is it limited to only 2 level deep. Is there a
PHP function that would allow me to pull a specific value from an
arbitrary array based on a delimited string. For example. Say $arr is
an array and I need the value $arr['key1']['key2']['key3']['key4']. I
wrote a simple function that allows me to pull that value by calling
getValue('key1/key2/key3/key4'). It may appears at first seem to be
useless but there are places where this is desirable.
Here is my code:
function getValue($arr, $tag) {
if(!is_array($arr)) {
trigger_error('getValue(): First argument should be an array',
E_USER_WARNING);
}
$keys = explode("/", $tag);
foreach ($keys as $key) {
if (!array_key_exists($key,$arr)) return null;
$arr = $arr[$key];
}
return $arr;
}
OK, I guess my questions are...
1) Am I reinventing the wheel. Is there something in PHP that does
this?
2) Do you think that could be a usefull addition to the cake core?
Where would it belong?
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