Sample code:
<script language="php">
$array = array( "one", "two", "three" );
while( list( $key, $val ) = each( $array )) {
if( is_string( $key )) {
echo "Key is a string\n";
}
echo "Key: $key => $val :Val\n";
}
echo "\n\n";
$array = array( "SS" => "one", "15" => "two", "19" => "three" );
while( list( $key, $val ) = each( $array )) {
if( is_string( $key )) {
echo "Key is a string\n";
}
echo "Key: $key => $val :Val\n";
}
</script>
Because of the loose typing in PHP, essentially all arrays
are associative arrays. Running the script above produces
the following results:
------------------------ BEGIN RESULTS
Key: 0 => one :Val
Key: 1 => two :Val
Key: 2 => three :Val
Key is a string
Key: SS => one :Val
Key: 15 => two :Val
Key: 19 => three :Val
------------------------ END RESULTS
Anyways, I want to be able to pass an array to a function.
This array can be defined by me as associative (as the
second array in the sample) or regular (as the first). However,
I need to be able to tell one from the other in my function.
As you can see, I can't do it with the is_string() function
because it doesn't realize that the "15" and the "19" I specify
as keys in the second declaration are actually strings that I
added and not actual element numbers.
Is there some way that I can determine if the keys of an array
are user defined (ie, a user defined associative array) and not
the keys PHP defines due to the fact that they are the element
numbers?
Another, somewhat related issue, notice the funkiness that
happens when you run the following, similar, script:
<script language="php">
$array = array( "one", "two", "three" );
while( list( $key, $val ) = each( $array )) {
if( is_string( $key )) {
echo "Key is a string\n";
}
echo "Key: $key => $val :Val\n";
}
echo "\n\n";
for( $i = 0; $i < count( $array ); $i++ ) {
echo "Printing element: $i -- " . $array["$i"] . "\n";
}
echo "\n\n";
$array = array( "SS" => "one", "15" => "two", "three" );
while( list( $key, $val ) = each( $array )) {
if( is_string( $key )) {
echo "Key is a string\n";
}
echo "Key: $key => $val :Val\n";
}
echo "\n\n";
for( $i = 0; $i < 20; $i++ ) {
echo "Printing element: $i -- " . $array["$i"] . "\n";
}
</script>
Any help anyone can provide would be *greatly* appreciated!!
Chris
