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

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

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>Error Control Operators</A
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><P
>&#13;    PHP supports one error control operator: the at sign (@). When
    prepended to an expression in PHP, any error messages that might
    be generated by that expression will be ignored.
   </P
><P
>&#13;    If the <A
HREF="missing-stuff.html#ini.track-errors"
><VAR
CLASS="option"
>track_errors</VAR
></A
>
    feature is enabled, any error message generated by the expression
    will be saved in the variable
    <A
HREF="reserved.variables.html#reserved.variables.phperrormsg"
>$php_errormsg</A
>.
    This variable will be overwritten on each error, so check early if you
    want to use it.
   </P
><P
>&#13;    <DIV
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#FF8000">/* Intentional file error */<br /></font><font color="#0000BB">$my_file </font><font color="#007700">= @</font><font color="#0000BB">file </font><font color="#007700">(</font><font color="#DD0000">'non_existent_file'</font><font color="#007700">) or<br />&nbsp;&nbsp;&nbsp;&nbsp;die (</font><font color="#DD0000">"Failed opening file: error was '$php_errormsg'"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">// this works for any expression, not just functions:<br /></font><font color="#0000BB">$value </font><font color="#007700">= @</font><font color="#0000BB">$cache</font><font color="#007700">[</font><font color="#0000BB">$key</font><font color="#007700">]; <br /></font><font color="#FF8000">// will not issue a notice if the index $key doesn't exist.<br /><br /></font><font color="#0000BB">?&gt;</font>
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   </P
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><B
>Not&#227;: </B
>
     The @-operator works only on
     <A
HREF="language.expressions.html"
>expressions</A
>. A simple rule
     of thumb is: if you can take the value of something, you can prepend
     the @ operator to it. For instance, you can prepend it to variables,
     function and <A
HREF="function.include.html"
><B
CLASS="function"
>include()</B
></A
> calls, constants, and
     so forth. You cannot prepend it to function or class definitions,
     or conditional structures such as <VAR
CLASS="literal"
>if</VAR
> and
     <VAR
CLASS="literal"
>foreach</VAR
>, and so forth.
    </P
></BLOCKQUOTE
></DIV
><P
>&#13;    See also <A
HREF="function.error-reporting.html"
><B
CLASS="function"
>error_reporting()</B
></A
> and the manual section for
    <A
HREF="ref.errorfunc.html"
>Error Handling and Logging functions</A
>.
   </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
     The "@" error-control operator prefix will not disable messages
     that are the result of parse errors.
    </P
></BLOCKQUOTE
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>Avertisment</B
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>&#13;     Currently the "@" error-control operator prefix will even disable
     error reporting for critical errors that will terminate script
     execution. Among other things, this means that if you use "@" to
     suppress errors from a certain function and either it isn't
     available or has been mistyped, the script will die right there
     with no indication as to why.
    </P
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