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
// Specify an email address (valid or invalid)
$email = "[email protected]";
// Use the filter_var function with FILTER_VALIDATE_EMAIL to check if the email is valid
if (filter_var($email, FILTER_VALIDATE_EMAIL))
{
// If the email is valid, print a message indicating it is valid
echo '"' . $email . '" = Valid'."\n";
}
else
{
// If the email is invalid, print a message indicating it is invalid
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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