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php remove malicious html element

yusuf_fazeri answered on January 1, 2023 Popularity 1/10 Helpfulness 1/10

answer php remove malicious html element

php remove malicious html element

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function sanitizeInput($inputP)
{
    $spaceDelimiter = "#BLANKSPACE#";
    $newLineDelimiter = "#NEWLNE#";
                                
    $inputArray = [];
    $minifiedSanitized = '';
    $unMinifiedSanitized = '';
    $sanitizedInput = [];
    $returnData = [];
    $returnType = "string";

    if($inputP === null) return null;
    if($inputP === false) return false;
    if(is_array($inputP) && sizeof($inputP) <= 0) return [];

    if(is_array($inputP))
    {
        $inputArray = $inputP;
        $returnType = "array";
    }
    else
    {
        $inputArray[] = $inputP;
        $returnType = "string";
    }

    foreach($inputArray as $input)
    {
        $minified = str_replace(" ",$spaceDelimiter,$input);
        $minified = str_replace("\n",$newLineDelimiter,$minified);

        //removing <script> tags
        $minifiedSanitized = preg_replace("/[<][^<]*script.*[>].*[<].*[\/].*script*[>]/i","",$minified);

        $unMinifiedSanitized = str_replace($spaceDelimiter," ",$minifiedSanitized);
        $unMinifiedSanitized = str_replace($newLineDelimiter,"\n",$unMinifiedSanitized);

        //removing inline js events
        $unMinifiedSanitized = preg_replace("/([ ]on[a-zA-Z0-9_-]{1,}=\".*\")|([ ]on[a-zA-Z0-9_-]{1,}='.*')|([ ]on[a-zA-Z0-9_-]{1,}=.*[.].*)/","",$unMinifiedSanitized);

        //removing inline js
        $unMinifiedSanitized = preg_replace("/([ ]href.*=\".*javascript:.*\")|([ ]href.*='.*javascript:.*')|([ ]href.*=.*javascript:.*)/i","",$unMinifiedSanitized);

                                    
        $sanitizedInput[] = $unMinifiedSanitized;
    }

    if($returnType == "string" && sizeof($sanitizedInput) > 0)
    {
        $returnData = $sanitizedInput[0];
    }
    else
    {
        $returnData = $sanitizedInput;
    }
                                
    return $returnData;
}

Popularity 1/10 Helpfulness 1/10 Language php

Source: www.mradeveloper.com

Tags: element html php

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Contributed on Jan 01 2023

yusuf_fazeri

0 Answers Avg Quality 2/10

php remove malicious html element

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