PHP extract() Function
This function is used to import variables from an array into the current symbol table. It takes an associative array array and treats keys as variable names and values as variable values. For each key/value pair it will create a variable in the current symbol table, subject to extract_type and prefix parameters.
| Parameter | Description |
|---|---|
| array | Required. Specifies the array to use |
| extract_rules | Optional. The extract() function checks for invalid variable names and collisions with existing variable names. This parameter specifies how invalid and colliding names are treated. |
| prefix | Optional. If EXTR_PREFIX_SAME, EXTR_PREFIX_ALL, EXTR_PREFIX_INVALID or EXTR_PREFIX_IF_EXISTS are used in the extract_rules parameter, a specified prefix is required. This parameter specifies the prefix. The prefix is automatically separated from the array key by an underscore character. |
Syntax
extract(array,extract_rules,prefix) Example
$a = "Cooper";
$my_array = array("a" => "Samuel","b" => "Lachlan", "c" => "Alex");
extract($my_array);
echo "\$a = $a; \$b = $b; \$c = $c";
Output
$a = Samuel; $b = Lachlan; $c = Alex
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