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documentation for is_null, is_scalar, is_writeable, call_user_func_array
and call_user_func_method git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@42917 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Jesus M. Castagnetto
parent
51e297e4e1
commit
d021c22d28
4 changed files with 245 additions and 2 deletions
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@ -161,7 +161,51 @@ Object leafy belongs to class spinach a subclass of Vegetable
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</sect2>
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</sect1>
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</partintro>
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<refentry id="function.call-user-method-array">
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<refnamediv>
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<refname>call_user_method_array</refname>
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<refpurpose>
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Call a user method given with an array of parameters
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</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>mixed
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<function>call_user_method_array</function>
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</funcdef>
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<paramdef>string
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<parameter>method_name</parameter>
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</paramdef>
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<paramdef>object
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<parameter>obj</parameter>
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</paramdef>
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<paramdef>array
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<parameter><optional>paramarr</optional></parameter>
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</paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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Calls a the method referred by <parameter>method_name</parameter> from
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the user defined <parameter>obj</parameter> object, using the paramaters
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in <parameter>paramarr</parameter>.
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</para>
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<para>
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See also:
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<function>call_user_func_array</function>,
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<function>call_user_func</function>,
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<function>call_user_method</function>.
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</para>
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<note>
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<para>
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This function was added to the CVS code after release of PHP 4.0.4pl1
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</para>
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</note>
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</refsect1>
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</refentry>
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<refentry id="function.call-user-method">
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<refnamediv>
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<refname>call_user_method</refname>
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@ -226,7 +270,9 @@ call_user_method ("print_info", $cntry, "\t");
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</informalexample>
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</para>
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<simpara>
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See also <function>call_user_func</function>.
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See also <function>call_user_func_array</function>.
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<function>call_user_func</function>,
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<function>call_user_method_array</function>.
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</simpara>
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</refsect1>
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</refentry>
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@ -1808,6 +1808,25 @@ if($fp){
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</refsect1>
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</refentry>
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<refentry id="function.is-writeable">
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<refnamediv>
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<refname>is_writeable</refname>
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<refpurpose>Tells whether the filename is writable</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>bool <function>is_writeable</function></funcdef>
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<paramdef>string <parameter>filename</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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This is an alias for <function>is_writable</function>
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.is-uploaded-file">
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<refnamediv>
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<refname>is_uploaded_file</refname>
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@ -8,6 +8,67 @@
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with functions.
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</para>
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</partintro>
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<refentry id="function.call-user-func-array">
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<refnamediv>
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<refname>call_user_func_array</refname>
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<refpurpose>
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Call a user function given with an array of parameters
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</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>mixed
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<function>call_user_func_array</function>
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</funcdef>
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<paramdef>string
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<parameter>function_name</parameter>
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</paramdef>
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<paramdef>array
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<parameter><optional>paramarr</optional></parameter>
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</paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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Call a user defined function given by
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<parameter>function_name</parameter>, with
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the paramaters in <parameter>paramarr</parameter>.
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For example:
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<informalexample>
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<programlisting role="php">
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function debug($var, $val)
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echo "***DEBUGGING\nVARIABLE: $var\nVALUE:";
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if (is_array($val) || is_object($val) || is_resource($val))
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print_r($val);
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else
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echo "\n$val\n";
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echo "***\n";
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}
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$c = mysql_connect();
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$host = $HTTP_SERVER_VARS["SERVER_NAME"];
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call_user_func_array ('debug', array("host", $host));
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call_user_func_array ('debug', array("c", $c));
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call_user_func_array ('debug', array("HTTP_POST_VARS", $HTTP_POST_VARS));
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</programlisting>
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</informalexample>
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</para>
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<para>
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See also:
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<function>call_user_func</function>,
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<function>call_user_method</function>,
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<function>call_user_method_array</function>.
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</para>
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<note>
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<para>
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This function was added to the CVS code after release of PHP 4.0.4pl1
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</para>
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</note>
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</refsect1>
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</refentry>
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<refentry id="function.call-user-func">
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<refnamediv>
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@ -48,6 +109,12 @@ call_user_func ('barber', "shave");
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</programlisting>
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</informalexample>
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</para>
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<para>
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See also:
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<function>call_user_func_array</function>,
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<function>call_user_method</function>,
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<function>call_user_method_array</function>.
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</para>
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</refsect1>
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</refentry>
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@ -483,6 +483,40 @@ echo get_resource_type($doc->doc)."\n";
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</refsect1>
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</refentry>
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<refentry id="function.is-null">
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<refnamediv>
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<refname>is_null</refname>
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<refpurpose>
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Finds whether a variable is null
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</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>bool <function>is_null</function></funcdef>
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<paramdef>mixed <parameter>var</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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Returns true if <parameter>var</parameter> is null, false otherwise.
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</para>
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<para>
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See also <function>is_bool</function>,
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<function>is_double</function>,
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<function>is_numeric</function>,
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<function>is_float</function>,
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<function>is_int</function>,
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<function>is_real</function>,
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<function>is_string</function>,
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<function>is_object</function>,
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<function>is_array</function>, and
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<function>is_integer</function>.
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.is-numeric">
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<refnamediv>
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<refname>is_numeric</refname>
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@ -609,6 +643,83 @@ echo get_resource_type($doc->doc)."\n";
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.is-scalar">
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<refnamediv>
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<refname>is_scalar</refname>
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<refpurpose>
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Finds whether a variable is a scalar
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</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>bool
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<function>is_scalar</function>
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</funcdef>
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<paramdef>mixed
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<parameter>var</parameter>
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</paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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<function>is_scalar</function> returns true if the variable
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given by the <parameter>var</parameter> parameter is a scalar,
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otherwise it returns false.
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</para>
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<para>
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Scalar variables are those containing an integer, float, string
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or boolean. For example:
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<informalexample>
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<programlisting role="php">
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function show_var($var) {
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if (is_scalar($var))
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echo $var;
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else
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var_dump($var);
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}
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$pi = 3.1416;
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$proteins = array("hemoglobin", "cytochrome c oxidase", "ferredoxin");
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show_var($pi);
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// prints: 3.1416
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show_var($proteins)
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// prints:
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// array(3) {
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// [0]=>
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// string(10) "hemoglobin"
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// [1]=>
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// string(20) "cytochrome c oxidase"
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// [2]=>
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// string(10) "ferredoxin"
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// }
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</programlisting>
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</informalexample>
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</para>
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<note>
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<para>
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This function was added to the CVS code after the release of PHP
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4.0.4pl1
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</para>
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</note>
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<para>
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See also <function>is_bool</function>,
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<function>is_double</function>,
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<function>is_numeric</function>,
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<function>is_float</function>,
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<function>is_int</function>,
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<function>is_real</function>,
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<function>is_string</function>,
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<function>is_object</function>,
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<function>is_array</function>, and
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<function>is_integer</function>.
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.is-string">
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<refnamediv>
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