function.cycle.php
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上传日期:2015-12-05
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文件大小:3k
- <?php
- /**
- * Smarty plugin
- * @package Smarty
- * @subpackage plugins
- */
- /**
- * Smarty {cycle} function plugin
- *
- * Type: function<br>
- * Name: cycle<br>
- * Date: May 3, 2002<br>
- * Purpose: cycle through given values<br>
- * Input:
- * - name = name of cycle (optional)
- * - values = comma separated list of values to cycle,
- * or an array of values to cycle
- * (this can be left out for subsequent calls)
- * - reset = boolean - resets given var to true
- * - print = boolean - print var or not. default is true
- * - advance = boolean - whether or not to advance the cycle
- * - delimiter = the value delimiter, default is ","
- * - assign = boolean, assigns to template var instead of
- * printed.
- *
- * Examples:<br>
- * <pre>
- * {cycle values="#eeeeee,#d0d0d0d"}
- * {cycle name=row values="one,two,three" reset=true}
- * {cycle name=row}
- * </pre>
- * @link http://smarty.php.net/manual/en/language.function.cycle.php {cycle}
- * (Smarty online manual)
- * @author Monte Ohrt <monte@ispi.net>
- * @author credit to Mark Priatel <mpriatel@rogers.com>
- * @author credit to Gerard <gerard@interfold.com>
- * @author credit to Jason Sweat <jsweat_php@yahoo.com>
- * @version 1.3
- * @param array
- * @param Smarty
- * @return string|null
- */
- function smarty_function_cycle($params, &$smarty)
- {
- static $cycle_vars;
-
- $name = (empty($params['name'])) ? 'default' : $params['name'];
- $print = (isset($params['print'])) ? (bool)$params['print'] : true;
- $advance = (isset($params['advance'])) ? (bool)$params['advance'] : true;
- $reset = (isset($params['reset'])) ? (bool)$params['reset'] : false;
-
- if (!in_array('values', array_keys($params))) {
- if(!isset($cycle_vars[$name]['values'])) {
- $smarty->trigger_error("cycle: missing 'values' parameter");
- return;
- }
- } else {
- if(isset($cycle_vars[$name]['values'])
- && $cycle_vars[$name]['values'] != $params['values'] ) {
- $cycle_vars[$name]['index'] = 0;
- }
- $cycle_vars[$name]['values'] = $params['values'];
- }
- $cycle_vars[$name]['delimiter'] = (isset($params['delimiter'])) ? $params['delimiter'] : ',';
-
- if(is_array($cycle_vars[$name]['values'])) {
- $cycle_array = $cycle_vars[$name]['values'];
- } else {
- $cycle_array = explode($cycle_vars[$name]['delimiter'],$cycle_vars[$name]['values']);
- }
-
- if(!isset($cycle_vars[$name]['index']) || $reset ) {
- $cycle_vars[$name]['index'] = 0;
- }
-
- if (isset($params['assign'])) {
- $print = false;
- $smarty->assign($params['assign'], $cycle_array[$cycle_vars[$name]['index']]);
- }
-
- if($print) {
- $retval = $cycle_array[$cycle_vars[$name]['index']];
- } else {
- $retval = null;
- }
- if($advance) {
- if ( $cycle_vars[$name]['index'] >= count($cycle_array) -1 ) {
- $cycle_vars[$name]['index'] = 0;
- } else {
- $cycle_vars[$name]['index']++;
- }
- }
-
- return $retval;
- }
- /* vim: set expandtab: */
- ?>