PHP compact() Function
Topic: PHP Array ReferencePrev|Next
Description
The compact() function creates an array from variables and their values.
The following table summarizes the technical details of this function.
| Return Value: | Returns an array with all the variables added to it. |
|---|---|
| Changelog: | Since PHP 7.3.0 this function issues an E_NOTICE level error if a given string refers to an unset variable. Earlier, such strings have been silently skipped. |
| Version: | PHP 4+ |
Syntax
The basic syntax of the compact() function is given with:
The following example shows the compact() function in action.
Example
Run this code »<?php
// Sample variables
$brand = "Apple";
$model = "iPhone";
$color = "Black";
// Creating array
$result = compact("brand", "model", "color");
print_r($result);
?>Note: The compact() function can take several parameters. Each parameter can be either a string containing the name of the variable, or an array of variable names. The array can further contain other arrays of variable names inside it; compact() handles it recursively.
Parameters
The compact() function accepts the following parameters.
| Parameter | Description |
|---|---|
| varname1 | Required. Can be a string representing variable name, or an array of variables. |
| varname2, ... | Optional. Can be a string representing variable name, or an array of variables. Multiple parameters are allowed. |
More Examples
Here're some more examples showing how compact() function actually works:
You can also pass an array of variable names to this function as shown in the following example:
Example
Run this code »<?php
$firstname = "John";
$lastname = "Carter";
$age = "32";
$name = array("firstname", "lastname");
$result = compact($name, "age");
print_r($result);
?>
