<documentation title="Silenced Errors">
<standard>
<![CDATA[
Suppressing Errors is not allowed.
]]>
</standard>
<code_comparison>
<code title="Valid: isset() is used to verify that a variable exists before trying to use it.">
<![CDATA[
if (<em>isset($foo)</em> && $foo) {
echo "Hello\n";
}
]]>
</code>
<code title="Invalid: Errors are suppressed.">
<![CDATA[
if (<em>@</em>$foo) {
echo "Hello\n";
}
]]>
</code>
</code_comparison>
</documentation>