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The compact() function creates an array including variable names and their values
compact ( mixed $varname1 , mixed $... );
Create an array containing variables and their values.
For each parameter, compact() looks up the variable name in the current symbol table and adds it to the output array, with the variable name as the key and the content of the variable as the value. In simple terms, it does the opposite of extract(). Returns the array after adding all variables.
Returns the output array containing all added variables.
If the string points to an undefined variable, compact() will produce an E_NOTICE level error.
| Serial Number | Parameters and Description |
|---|---|
| 1 | varname1(Required) The compact() function accepts a variable number of arguments. Each argument can be a string containing a variable name or an array containing variable names, which can also contain other arrays with variable names as elements. compact() can handle this recursively. |
The compact() function creates an associative array using the given values
<?php
$city = "San Francisco";
$state = "CA";
$event = "SIGGRAPH";
$location_vars = array("city", "state");
$result = compact("event", "nothing_here", $location_vars);
print_r($result);
?>Test and see‹/›Output result:
Array ( [event] => SIGGRAPH [city] => San Francisco [state] => CA )