Check String contains html tags and count of html tags using PHP

Here i will explain how to check the given string contains html tags or not.  this function return boolean value.
// Function for check html tag presents
function hasTags($str){ 
$htmlTags = array('A' ,'B', 'BODY', 'BR', 'BUTTON', 'DIV', 'FONT', 'H1', 'H2', 'H3', 'H4', 'H5', 'H6', 'IMG', 'INPUT', 'TABLE');
// Here you mention what are the html tags you want to check
 if(preg_match_all("~(<\/?)\b(".implode('|',$htmlTags).")\b([^>]*>)~i",$str,$matches)){
        return TRUE;
    }else{
        return FALSE;
    }
}
$str = 'Welcome to <h1><b></b></h1>';

if(hasTags($str)){
    echo 'HTML tags Found';
}else{
    echo 'HTML tags not found';
} 

If you want to get the present html tags count then consider the below function.

// Function for check html tag presents
function hasTags($str){
 $htmlTags = array('A' ,'B', 'BODY', 'BR', 'BUTTON', 'DIV', 'FONT', 'H1', 'H2', 'H3', 'H4', 'H5', 'H6', 'IMG', 'INPUT', 'TABLE');


// Here you mention what are the html tags you want to check
if(preg_match_all("~(<\/?)\b(".implode('|',$htmlTags).")\b([^>]*>)~i",$str,$matches)){
        return $matches[1];
    }else{
        return 0;
    }
}
$str = 'Welcome to <h1><b></b></h1>';

echo 'Tags Count = '.hasTags($str); 

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