Block PHP contact media

Question

I am developing a system where I need not allow contact forms like email, skype, facebook and phone. I wanted to use str_replace() only that I would have to make a giant list with a few words that it contains in those items and replace with nothing '' . Would you have a plugin or an open-source that already does this service? Or even a basic code?

Answer 1

Users will find a way to pass on personal information.

If you can’t email: [email protected], someone will change until your rule fails: papa arroba charlie ponto com, papa(a)charlie dot com... infinite possibilities.

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I recommend an algorithm that looks for certain words, but does not stop the registration, just create an alert that there is a possible contact information for you to analyze.

1. An ER can find email or phone numbers, Skype or FB profile, Twitter, or any other social networking site.

2. You can create an array of (0, 1, 2, ... 9) and an array of (zero, um, dois, ... nove) and scroll through the text to find possible combinations between numbers and text.

I made a simple example, you can see in ideone.

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function validate( $string )
{
    // caracteres que serão encontrados em sequencia
    $block[]   = array(1,2,3,4,5,6,7,8,9,0);
    $block[]   = array('um','dois','tres','quatro','cinco','seis','sete','oito','nove','zero');
    $block     = array_merge( $block[0] , $block[1] );

    // agrupa a sequencia encontrada
    $sequencia = array();
    $string    = explode( ' ' , $string );

    // procura a sequencia de 3 caracteres quee stiverem no `array block`
    // palavra anterior + palavra atual + palavra seguinte formando uma sequencia de 3 caracteres
    foreach( $string as $i => $palavra )
    {
        $match = array();

        if( isset( $string[$i-1] ) )
        $match[] = $string[$i-1];

        $match[] = $string[$i];

        if( isset( $string[$i+1] ) )
        $match[] = $string[$i+1];


        $possivel = array_intersect( $match , $block );
        if( count( $possivel ) === 3 )
        $sequencia[] = $possivel;
    }

    return $sequencia;
}

in this example below the output will be a multidimensional array with array('1' , 'dois' , '3' ) and array('quatro' , 'cinco' , 'zero' )

$sequencia = validate( "meu 1 dois 3 telefone ligue quatro cinco zero" );

if( count( $sequencia ) > 0 )
{
    echo printr( 'possível sequência: ' );
    echo printr( $sequencia );
}
else
{
    echo printr( 'parece ok.' );
}

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Note that the sequence will take into account the spelling. You can increment an ER together so that the spelling is not impediment. It is simple and server as base.