I have the following array:
$person = array('first_name' => 'Fred', 'last_name' => 'Flintstone');
I want to change/pad the keys so the array will end up as (note extra colons):
$person = array('::first_name::' => 'Fred', '::last_name::' => 'Flintstone');
For some reason I'm drawing a blank on the simplest way to do this
I don't know the simplest way, but the quickest way off the top of my head would be to just loop through.
foreach($person as $key=>$value) {
$newArray['::' . $key .'::'] = $value;
}
I guess you could even do
function tokenize($person)
{
foreach($person as $key=>$value) {
$newArray['::' . $key .'::'] = $value;
}
return $newArray;
}
$person = array('first_name' => 'Fred', 'last_name' ='Flintstone');
$newPerson = array_map("tokenize", $person);
print_r($newPerson);
You can also do:
<?php
$person = array('first_name' => 'Fred', 'last_name' =>'Flintstone');
$keys = array_keys($person); // array of keys.
for($i=0;$i<count($person);$i++) {
$keys[$i] = "::$keys[$i]::"; // change each key.
}
// recreate array using changed keys.
$person = array_combine($keys,array_values($person));
var_dump($person);
?>
Output:
array(2) {
["::first_name::"]=>
string(4) "Fred"
["::last_name::"]=>
string(10) "Flintstone"
}
Variation from Laykes solution, just without creating a new array:
foreach($array as $key => $val) {
$array["..$key.."] = $val;
unset($array[$key]);
}
I assume you want to do this because you are replacing placeholders in your template with something like this:
$template = str_replace(array_keys($person), $person, $template);
If so, keep in mind that you are iterating twice over $person then. One time to change the keys and another time to get the keys. So it would be more efficient to replace the call to array_keys() with a function that return the keys as padded values, e.g. something like
function array_keys_padded(array $array, $padding) {
$keys = array();
while($key = key($array)) {
$keys[] = $padding . $key . $padding;
next($array);
}
return $keys;
}
// Usage
$template = str_replace(array_keys_padded($person, '::'), $person, $template);
But then again, you could just as well do it with a simple iteration:
foreach($person as $key => $val) {
str_replace("::$key::", $val, $template);
}
But disregard this answer if you are not doing it this way :)
Out of curiosity, how are your users actually providing the array?
