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>htmlspecialchars</A
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> (PHP3 , PHP4 )</P
>htmlspecialchars --
Convert special characters to HTML entities
</DIV
><DIV
CLASS="refsect1"
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></A
><H2
>Description</H2
><DIV
CLASS="funcsynopsis"
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NAME="AEN36607"
></A
><P
></P
><P
><CODE
><CODE
CLASS="FUNCDEF"
>string <B
CLASS="function"
>htmlspecialchars</B
></CODE
> (string string [, int quote_style])</CODE
></P
><P
></P
></DIV
><P
> Certain characters have special significance in HTML, and should
be represented by HTML entities if they are to preserve their
meanings. This function returns a string with some of these
conversions made; the translations made are those most
useful for everyday web programming. If you require all HTML
character entities to be translated, use
<A
HREF="function.htmlentities.html"
><B
CLASS="function"
>htmlentities()</B
></A
> instead.
</P
><P
> This function is useful in preventing user-supplied text from
containing HTML markup, such as in a message board or guest book
application. The optional second argument, quote_style, tells the
function what to do with single and double quote characters. The
default mode, ENT_COMPAT, is the backwards compatible mode which only
translates the double-quote character and leaves the single-quote
untranslated. If ENT_QUOTES is set, both single and double quotes
are translated and if ENT_NOQUOTES is set neither single nor double quotes
are translated.
</P
><P
> The translations performed are:
<P
></P
><UL
><LI
><P
> '&' (ampersand) becomes '&amp;'
</P
></LI
><LI
><P
> '"' (double quote) becomes '&quot;' when ENT_NOQUOTES is not set.
</P
></LI
><LI
><P
> ''' (single quote) becomes '&#039;' only when ENT_QUOTES is set.
</P
></LI
><LI
><P
> '<' (less than) becomes '&lt;'
</P
></LI
><LI
><P
> '>' (greater than) becomes '&gt;'
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>Example 1. <B
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>htmlspecialchars()</B
> example</B
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><PRE
CLASS="programlisting"
> $new = htmlspecialchars("<a href='test'>Test</a>", ENT_QUOTES);
</PRE
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>
</P
><P
> Note that this function does not translate anything beyond what
is listed above. For full entity translation, see
<A
HREF="function.htmlentities.html"
><B
CLASS="function"
>htmlentities()</B
></A
>. Also note that the optional second
argument was added in PHP 3.0.17 and PHP 4.0.3.
</P
><P
> See also <A
HREF="function.htmlentities.html"
><B
CLASS="function"
>htmlentities()</B
></A
> and
<A
HREF="function.nl2br.html"
><B
CLASS="function"
>nl2br()</B
></A
>.
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