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<documentation title="For Loops With Function Calls in the Test">
<standard>
<![CDATA[
For loops should not call functions inside the test for the loop when they can be computed beforehand.
]]>
</standard>
<code_comparison>
<code title="Valid: A for loop that determines its end condition before the loop starts.">
<![CDATA[
<em>$end = count($foo);</em>
for ($i = 0; $i < $end; $i++) {
echo $foo[$i]."\n";
}
]]>
</code>
<code title="Invalid: A for loop that unnecessarily computes the same value on every iteration.">
<![CDATA[
for ($i = 0; $i < <em>count($foo)</em>; $i++) {
echo $foo[$i]."\n";
}
]]>
</code>
</code_comparison>
</documentation>
|