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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
$password = 'YourPassword!++123,?@#$%';
$specialCharacters = preg_match_all('/[!@#$%^&*()_-+={};:,.?\\|~]/', '', $password);
$clearing = preg_replace('/[^a-zA-Z0-9]/', '', $specialCharacters);
echo $clearing;
$text = "abc12!!!3";
$pattern = '/[^\+\*\?\[\]\^\\$\(\)\{\}\=\!]*/';
if (preg_match_all($pattern, $text)) {
echo "Строка соответствует регулярному выражению.";
} else {
echo "Строка не соответствует регулярному выражению.";
}