how to tell a string is all in english in php or javascript? [closed]

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how to tell a string is all in english of php. eg:$test="eeeeeeeeeeeee" how to tell that the $test string is writen all in english.

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If you have all the characters you consider "english" into a string, then it can be done like this:

 $english_chars = 'abcdefghijklmnopqrstuvwxyz';
 $input = 'eeeeeee';
 $is_all_english = strspn($input, $english_chars) == strlen($input);

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Google Translate API is probably your best bet for reliably detecting the language of a string:

http://code.google.com/apis/language/translate/v1/getting_started.html#usingDetect