How to cast array elements to strings in PHP?
PhpStringArraysCastingPhp Problem Overview
If I have a array with objects:
$a = array($objA, $objB);
(each object has a __toString()-method)
How can I cast all array elements to string so that array $a contains no more objects but their string representation? Is there a one-liner or do I have to manually loop through the array?
Php Solutions
Solution 1 - Php
A one-liner:
$a = array_map('strval', $a);
// strval is a callback function
See PHP DOCS:
Solution 2 - Php
Not tested, but something like this should do it?
foreach($a as $key => $value) {
$new_arr[$key]=$value->__toString();
}
$a=$new_arr;
Solution 3 - Php
Alix Axel has the nicest answer. You can also apply anything to the array though with array_map like...
//All your objects to string.
$a = array_map(function($o){return (string)$o;}, $a);
//All your objects to string with exclamation marks!!!
$a = array_map(function($o){return (string)$o."!!!";}, $a);
Enjoy
Solution 4 - Php
Are you looking for implode?
$array = array('lastname', 'email', 'phone');
$comma_separated = implode(",", $array);
echo $comma_separated; // lastname,email,phone
Solution 5 - Php
I can't test it right now, but can you check what happens when you implode() such an array? The _toString should be invoked.
Solution 6 - Php
Is there any reason why you can't do the following?
$a = array(
(string) $objA,
(string) $objB,
);