Weird and interesting pitfalls in CI

The following code is correct:

<code><input <span><span>type</span>=</span><span>"checkbox"</span> name=<span>"permission[]"</span><span>value</span>=<span>"valuexxx"</span>/></code>

<code><span>$permissions</span><span>=</span><span>$this</span><span>-></span>input<span>-></span>post ( <span>'permission'</span> );</code>

The permissions in the following code can only obtain the selected number:

<code><input <span><span>type</span>=</span><span>"checkbox"</span> name=<span>"permission"</span><span>value</span>=<span>"valuexxx"</span>/></code>

<code><span>$permissions</span><span>=</span><span>$this</span><span>-></span>input<span>-></span>post ( <span>'permission'</span> );</code>

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The above has introduced the strange and interesting pitfalls in CI, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.