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PHP Reference

Quick Reference

The PHP filter_var_array() function gets multiple variables and optionally filters them.

				
					<?php
$data = array(
    'fullname' => 'Johnny Shay',
    'age' => '11',
    'email' => 'jshay@example.com',
);

$mydata = filter_var_array($data);
var_dump($mydata);
?>

Output

				
					array(3) {
    ["fullname"] => string(11) "Johnny Shay"
    ["age"] => string(2) "11"
    ["email"] => string(17) "jshay@example.com"
}

Syntax

				
					filter_var_array(data_array, args, add_empty)

Parameters

ParameterDescription
data_arraySpecifies an array with string keys containing the data to filter (required)
argsSpecifies an array of filter arguments; a valid array key is a variable name and a valid value is a filter ID, or an array specifying the filter, flags and option; this parameter can also be a single filter ID, if so, all values in the input array are filtered by the specified filter; a filter ID can be an ID name (like FILTER_VALIDATE_EMAIL) or an ID number (like 272)
add_emptyA Boolean value; TRUE adds missing keys as NULL to the return value (default value is TRUE)

We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.

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PHP NOTES:

  • When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
  • Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on

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