Sophie: php-manual-ro-0:20051028-1 noarch

php-manual-ro-20051028-1.noarch.rpm

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>Internal (built-in) functions</A
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>&#13;    PHP comes standard with many functions and constructs.  There are also
    functions that require specific PHP extensions compiled in otherwise 
    you'll get fatal "undefined function" errors.  For example, to use 
    <A
HREF="ref.image.html"
>image</A
> functions such as 
    <A
HREF="function.imagecreatetruecolor.html"
><B
CLASS="function"
>imagecreatetruecolor()</B
></A
>, you'll need your PHP compiled
    with <SPAN
CLASS="productname"
>GD</SPAN
> support.  Or, to use <A
HREF="function.mysql-connect.html"
><B
CLASS="function"
>mysql_connect()</B
></A
> you'll
    need your PHP compiled in with <A
HREF="ref.mysql.html"
>MySQL</A
>
    support.  There are many core functions that are included in every
    version of PHP like the <A
HREF="ref.strings.html"
>string</A
> and 
    <A
HREF="missing-stuff.html#ref.var"
>variable</A
> functions.  A call 
    to <A
HREF="function.phpinfo.html"
><B
CLASS="function"
>phpinfo()</B
></A
> or
    <A
HREF="function.get-loaded-extensions.html"
><B
CLASS="function"
>get_loaded_extensions()</B
></A
> will show you which
    extensions are loaded into your PHP.  Also note that many extensions are
    enabled by default and that the PHP manual is split up by extension.
    See the <A
HREF="configuration.html"
>configuration</A
>,  
    <A
HREF="installation.html"
>installation</A
>, and individual
    extension chapters, for information on how to setup your PHP.
   </P
><P
>&#13;    Reading and understanding a function's prototype is explained within the
    manual section titled 
    <A
HREF="about.prototypes.html"
>how to read a function definition</A
>.
    It's important to realize what a function returns or if a function works
    directly on a passed in value.  For example,
    <A
HREF="function.str-replace.html"
><B
CLASS="function"
>str_replace()</B
></A
> will return the modified string while 
    <A
HREF="function.usort.html"
><B
CLASS="function"
>usort()</B
></A
> works on the actual passed in variable
    itself.  Each manual page also has specific information for each
    function like information on function parameters, behavior changes,
    return values for both success and failure, and availability information.
    Knowing these important (yet often subtle) differences is crucial for
    writing correct PHP code.
   </P
><P
>&#13;    See also <A
HREF="function.function-exists.html"
><B
CLASS="function"
>function_exists()</B
></A
>, 
    <A
HREF="funcref.html"
>the function reference</A
>,
    <A
HREF="function.get-extension-funcs.html"
><B
CLASS="function"
>get_extension_funcs()</B
></A
>, and 
    <A
HREF="function.dl.html"
><B
CLASS="function"
>dl()</B
></A
>.
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