Is there Java HashMap equivalent in PHP?

In PHP, the equivalent to a Java HashMap would be an associative array. You can create one like this:

Example of creating an associative array in PHP

<?php

$map = array();
$map["key1"] = "value1";
$map["key2"] = "value2";

You can then access the values using the keys, like so:

Example of Java HashMap equivalent in PHP

<?php

$map = array();
$map["key1"] = "value1";
$map["key2"] = "value2";

echo $map["key1"]; // Outputs "value1"

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You can also use the built-in array functions to manipulate the associative array, such as "foreach" loop

Example of using array functions to manipulate a associative array in PHP

<?php

$map = array();
$map["key1"] = "value1";
$map["key2"] = "value2";

foreach($map as $key => $value){
   echo $key . ' : ' . $value . PHP_EOL;
}

or "array_keys" for get all keys

Example of Java HashMap equivalent in PHP with using the built-in array functions

<?php

$map = array();
$map["key1"] = "value1";
$map["key2"] = "value2";

$keys = array_keys($map);

print_r($keys);

Note that, in PHP, arrays are used to store multiple values and can be used as both lists and maps, unlike Java where arrays can only be used as lists.