> What is the best way to delete an element from an array?
> I tried using unset(), and it didn't work.
unset works with arrary elements, but it must be a global variable and not passed in.
Try the code below to see the results.
<?php
// deletes an element of global array
function deleteGlobal() {
global $animals;
echo "<br>in deleteGlobal()-Spot<br>\n";
unset ($animals["Spot"]);
foreach ($animals as $key => $value) {
echo "$key: $value<br>\n";
}
}
// deletes an element in local array only
function deleteElement($annArr) {
echo "<br>in deleteElement()-Felix<br>\n";
unset ($annArr["Felix"]);
foreach ($annArr as $key => $value) {
echo "$key: $value<br>\n";
}
}
//
$animals = array("Kitty"=>"cat", "Max"=>"dog", "Spot"=>"Dog",
"Felix"=>"cat","Morris"=>"cat");
echo "Initial array<br>\n";
foreach ($animals as $key => $value) {
echo "$key: $value<br>\n";
}
deleteGlobal();
echo "<br>after deleteGlobal()<br>\n";
foreach ($animals as $key => $value) {
echo "$key: $value<br>\n";
}
deleteElement($animals);
echo "<br>after deleteElement()<br>\n";
foreach ($animals as $key => $value) {
echo "$key: $value<br>\n";
}
echo "<br>After unset()-Morris<br>\n";
unset ($animals["Morris"]);
foreach ($animals as $key => $value) {
echo "$key: $value<br>\n";
}
?>
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