PHP Exercises : Email validation
PHP : Exercise-12 with Solution
Write a simple PHP program to check that emails are valid.
Hints : Use FILTER_VALIDATE_EMAIL filter that validates value as an e-mail address.
Note : The PHP documentation does not say that FILTER_VALIDATE_EMAIL should pass the RFC5321.
Sample Solution: -
PHP Code:
<?php
// pass valid/invalid emails
$email = "[email protected]";
if (filter_var($email, FILTER_VALIDATE_EMAIL))
{
echo '"' . $email . '" = Valid'."\n";
}
else
{
echo '"' . $email . '" = Invalid'."\n";
}
?>
Sample Output:
"[email protected]" = Valid
filter_var() function:
Syntax:
mixed filter_var ( mixed $variable [, int $filter = FILTER_DEFAULT [, mixed $options ]] )
filter_var() function filters a variable with a specified filter.
Parameters:
- variable: Value to filter.
- filter: The ID of the filter to apply.
- options: Associative array of options or bitwise disjunction of flags.
Flowchart:

PHP Code Editor:
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Previous: Write a PHP script to redirect a user to a different page.
Next: Write a e PHP script to display string, values within a table.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
PHP: Tips of the Day
Mutates the original array to filter out the values specified
Example:
<?php function tips_pull(&$items, ...$params) { $items = array_values(array_diff($items, $params)); return $items; } $items = ['x', 'y', 'z', 'x', 'y', 'z']; print_r(tips_pull($items, 'y', 'z')); ?>
Output:
Array ( [0] => x [1] => x )
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