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| Derek Jones | 733310d | 2009-02-11 01:13:43 +0000 | [diff] [blame] | 31 | <td><h1>CodeIgniter User Guide Version 1.7.1</h1></td> |
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| 58 | <h1>Common Functions</h1> |
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| 60 | <p>CodeIgniter uses a few functions for its operation that are globally defined, and are available to you at any point. These do not require loading any libraries or helpers.</p> |
| 61 | <h2>is_really_writable('<var>path/to/file</var>')</h2> |
| 62 | <p>is_writable() returns TRUE on Windows servers when you really can't write to the file as the OS reports to PHP as FALSE only if the read-only attribute is marked. This function determines if a file is actually writable by attempting to write to it first. Generally only recommended on platforms where this information may be unreliable.</p> |
| 63 | <code>if (is_really_writable('file.txt'))<br /> |
| 64 | {<br /> |
| 65 | echo "I could write to this if I wanted to";<br /> |
| 66 | }<br /> |
| 67 | else<br /> |
| 68 | {<br /> |
| 69 | echo "File is not writable";<br /> |
| 70 | }</code> |
| 71 | <h2>config_item('<var>item_key</var>')</h2> |
| 72 | <p>The <a href="../libraries/config.html">Config library</a> is the preferred way of accessing configuration information, however config_item() can be used to retrieve single keys. See Config library documentation for more information.</p> |
| 73 | <h2>show_error('<var>message</var>'), show_404('<var>page</var>'), log_message('<var>level</var>', '<samp>message</samp>')</h2> |
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