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The following code outputs an empty string. The cause is the "ó" in $text, but why? What characters does utf-8 encode then?
The problem is solved when using iso-8859-1, but I need to use utf-8, so what am I doing wrong?
<!doctype html> <head> <meta charset="utf-8"> </head> <body> <? $text = 'Hola ó Hola'; $text = htmlentities($text,ENT_QUOTES,'utf-8'); echo $text; ?> </body> </html> 
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Difference between htmlentities() and htmlspecialchars() function: The only difference between these function is that htmlspecialchars() function convert the special characters to HTML entities whereas htmlentities() function convert all applicable characters to HTML entities.
The htmlentities() function converts characters to HTML entities. Tip: To convert HTML entities back to characters, use the html_entity_decode() function. Tip: Use the get_html_translation_table() function to return the translation table used by htmlentities().
This function returns a string with these conversions made. If you require all input substrings that have associated named entities to be translated, use htmlentities() instead.
The htmlspecialchars() function converts some predefined characters to HTML entities.
I had a similar issue and used the flag ENT_SUBSTITUTE to prevent the empty string. It still didn't encode, and I couldn't rely on the file being UTF-8, so I converted the encoding on just the string:
$text = htmlentities(mb_convert_encoding($text, 'UTF-8', 'ASCII'), ENT_SUBSTITUTE, "UTF-8"); Make sure you save your source file as UTf-8 if it contains the string. Else make sure that whatever is supplying the string supplies it as UTF-8.
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