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copied!<p>As xil3 wrote, most people do look at a reference (that's what they're for) when they code. I personally have the php.net search tool installed on Firefox. I also have a search keyword set up for it. So I can just type <code>php array</code> or <code>php array_slice</code> into the address bar and it will take me to the <a href="http://us3.php.net/manual/en/language.types.array.php" rel="nofollow noreferrer">Arrays page</a> and <a href="http://us2.php.net/array_splice" rel="nofollow noreferrer">the documentation for <code>array_slice()</code></a> automatically. Aptana also gives you tooltips about each function, but they're fairly brief, out of necessity.</p> <p>Generally, the functions you use regularly you will remember how to use. The ones you don't or haven't used in a while you'll just have to look up. However, as a general rule, most of the array functions that are for modifying arrays are usually passed by ref, e.g.:</p> <pre><code>array_pop() array_push() array_shift() array_unshift() array_walk() asort() array_multisort() </code></pre> <p>Whereas the ones that make computations using multiple arrays or are extracting something from the array generally are passed by value, e.g.:</p> <pre><code>// multiple array inputs array_diff() array_merge() array_combine() // extraction array_values() array_keys() array_unique() array_sum() </code></pre> <p>Of course, there are some that break the rules or have ambiguous names, like <code>array_reverse()</code>, and I often still get <code>array_map()</code> and <code>array_walk()</code> confused (the latter is by ref), but for the most part it becomes intuitive after a while.</p> <p><strong>Edit:</strong> The PHP.net search tool can be <a href="http://mycroft.mozdev.org/search-engines.html?name=php.net" rel="nofollow noreferrer">found on MyCroft</a>. I use the one labeled "PHP Function List - en" by Lucas.</p>

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