Question

I am trying to access an array value by using a key. My code works fine except when there is a registered trademark in the key. How do I get around this?

$map = array(
    'Education'=>'643',
    'STORMS®'=>'644',
);

print $csv_line[$i];        // prints STORMS®
print $map[$csv_line[$i]];  // prints nothing
print $map['STORMS®'];      // prints the value I need

Answer 1

It is html special character, you can preg_replace or str_replace it if you want.

registered trademark can be called by & #174; OR & reg;

special character, htmlentities, normalizer

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$Content = preg_replace("/&#?[a-z0-9]+;/i","",$Content);