192 lines
6.6 KiB
HTML
192 lines
6.6 KiB
HTML
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<title>Text Helper : CodeIgniter User Guide</title>
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<meta name='author' content='ExpressionEngine Dev Team' />
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<meta name='description' content='CodeIgniter User Guide' />
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<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
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<div id="masthead">
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<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
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<tr>
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<td><h1>CodeIgniter User Guide Version 1.7.3</h1></td>
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<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
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<a href="http://codeigniter.com/">CodeIgniter Home</a> ›
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<a href="../index.html">User Guide Home</a> ›
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Text Helper
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</td>
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<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td>
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<!-- START CONTENT -->
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<div id="content">
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<h1>Text Helper</h1>
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<p>The Text Helper file contains functions that assist in working with text.</p>
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<h2>Loading this Helper</h2>
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<p>This helper is loaded using the following code:</p>
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<code>$this->load->helper('text');</code>
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<p>The following functions are available:</p>
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<h2>word_limiter()</h2>
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<p>Truncates a string to the number of <strong>words</strong> specified. Example:</p>
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<code>
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$string = "Here is a nice text string consisting of eleven words.";<br />
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<br />
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$string = word_limiter($string, 4);<br /><br />
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// Returns: Here is a nice…
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</code>
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<p>The third parameter is an optional suffix added to the string. By default it adds an ellipsis.</p>
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<h2>character_limiter()</h2>
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<p>Truncates a string to the number of <strong>characters</strong> specified. It maintains the integrity
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of words so the character count may be slightly more or less then what you specify. Example:</p>
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<code>
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$string = "Here is a nice text string consisting of eleven words.";<br />
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<br />
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$string = character_limiter($string, 20);<br /><br />
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// Returns: Here is a nice text string…
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</code>
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<p>The third parameter is an optional suffix added to the string, if undeclared this helper uses an ellipsis.</p>
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<h2>ascii_to_entities()</h2>
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<p>Converts ASCII values to character entities, including high ASCII and MS Word characters that can cause problems when used in a web page,
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so that they can be shown consistently regardless of browser settings or stored reliably in a database.
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There is some dependence on your server's supported character sets, so it may not be 100% reliable in all cases, but for the most
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part it should correctly identify characters outside the normal range (like accented characters). Example:</p>
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<code>$string = ascii_to_entities($string);</code>
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<h2>entities_to_ascii()</h2>
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<p>This function does the opposite of the previous one; it turns character entities back into ASCII.</p>
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<h2>word_censor()</h2>
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<p>Enables you to censor words within a text string. The first parameter will contain the original string. The
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second will contain an array of words which you disallow. The third (optional) parameter can contain a replacement value
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for the words. If not specified they are replaced with pound signs: ####. Example:</p>
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<code>
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$disallowed = array('darn', 'shucks', 'golly', 'phooey');<br />
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<br />
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$string = word_censor($string, $disallowed, 'Beep!');</code>
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<h2>highlight_code()</h2>
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<p>Colorizes a string of code (PHP, HTML, etc.). Example:</p>
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<code>$string = highlight_code($string);</code>
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<p>The function uses PHP's highlight_string() function, so the colors used are the ones specified in your php.ini file.</p>
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<h2>highlight_phrase()</h2>
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<p>Will highlight a phrase within a text string. The first parameter will contain the original string, the second will
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contain the phrase you wish to highlight. The third and fourth parameters will contain the opening/closing HTML tags
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you would like the phrase wrapped in. Example:</p>
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<code>
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$string = "Here is a nice text string about nothing in particular.";<br />
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<br />
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$string = highlight_phrase($string, "nice text", '<span style="color:#990000">', '</span>');
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</code>
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<p>The above text returns:</p>
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<p>Here is a <span style="color:#990000">nice text</span> string about nothing in particular.</p>
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<h2>word_wrap()</h2>
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<p>Wraps text at the specified <strong>character</strong> count while maintaining complete words. Example:</p>
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<code>$string = "Here is a simple string of text that will help us demonstrate this function.";<br />
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<br />
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echo word_wrap($string, 25);<br />
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<br />
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// Would produce:<br />
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<br />
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Here is a simple string<br />
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of text that will help<br />
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us demonstrate this<br />
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function</code>
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</div>
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<!-- END CONTENT -->
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<div id="footer">
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<p>
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Previous Topic: <a href="string_helper.html">String Helper</a>
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·
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<a href="#top">Top of Page</a> ·
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<a href="../index.html">User Guide Home</a> ·
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Next Topic: <a href="typography_helper.html">Typography Helper</a>
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</p>
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