How to use filter functions in PHP
In this article I will go to explain about PHP filter functions.
Functions of PHP filters
PHP filter is used to validate and filter data coming from insecure mediums. There are the following function of PHP filter:
Syntax of filter var array function
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filter_var_array(array $data, mixed $ definition);
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- Filter var function of PHP
It is used to validate and filter a single variable with a specified filter.
Syntax of filter var function
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filter_var(mixed $variable, int $filter=Filter_default);
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Example of filter var function
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<html>
<body>
<?php
if(!filter_var('[email protected]', FILTER_VALIDATE_EMAIL))
{
echo("It is not a E-mail");
}
else
{
echo("It is valid E-mail");
}
?>
</body>
</html>
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Output:
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