
function nodeTree($arr, $id = 0, $level = 0) { static $array = array(); foreach ($arr as $v) { if ($v['pid'] == $id) { $v['level'] = $level; $array[] = $v; nodeTree($arr, $v['id'], $level + 1); } } return $array; }
/** * 下拉选择框 */ function select($array = array(), $id = 0, $str = '', $default_option = '') { $string = '<select ' . $str . '>'; $default_selected = (empty($id) && $default_option) ? 'selected' : ''; if ($default_option) $string .= "<option value='' $default_selected>$default_option</option>"; if (!is_array($array) || count($array) == 0) return false; $ids = array(); if (isset($id)) $ids = explode(',', $id); foreach ($array as $key => $value) { $selected = in_array($key, $ids) ? 'selected' : ''; $string .= '<option value="' . $key . '" ' . $selected . '>' . $value . '</option>'; } $string .= '</select>'; return $string; } /** * 复选框 * * @param $array 选项 二维数组 * @param $id 默认选中值,多个用 '逗号'分割 * @param $str 属性 * @param $defaultvalue 是否增加默认值 默认值为 -99 * @param $width 宽度 */ function checkbox($array = array(), $id = '', $str = '', $defaultvalue = '', $width = 0, $field = '') { $string = ''; $id = trim($id); if ($id != '') $id = strpos($id, ',') ? explode(',', $id) : array($id); if ($defaultvalue) $string .= '<input type="hidden" ' . $str . ' value="-99">'; $i = 1; foreach ($array as $key => $value) { $key = trim($key); $checked = ($id && in_array($key, $id)) ? 'checked' : ''; if ($width) $string .= '<label class="ib" style="width:' . $width . 'px">'; $string .= '<input type="checkbox" ' . $str . ' id="' . $field . '_' . $i . '" ' . $checked . ' value="' . $key . '"> ' . $value; if ($width) $string .= '</label>'; $i++; } return $string; } /** * 单选框 * * @param $array 选项 二维数组 * @param $id 默认选中值 * @param $str 属性 */ function radio($array = array(), $id = 0, $str = '', $width = 0, $field = '') { $string = ''; foreach ($array as $key => $value) { $checked = trim($id) == trim($key) ? 'checked' : ''; if ($width) $string .= '<label class="ib" style="width:' . $width . 'px">'; $string .= '<input type="radio" ' . $str . ' id="' . $field . '_' . $key . '" ' . $checked . ' value="' . $key . '"> ' . $value; if ($width) $string .= '</label>'; } return $string; } /** * 字符串加密、解密函数 * * * @param string $txt 字符串 * @param string $operation ENCODE为加密,DECODE为解密,可选参数,默认为ENCODE, * @param string $key 密钥:数字、字母、下划线 * @param string $expiry 过期时间 * @return string */ function encry_code($string, $operation = 'ENCODE', $key = '', $expiry = 0) { $ckey_length = 4; $key = md5($key != '' ? $key : config('encry_key')); $keya = md5(substr($key, 0, 16)); $keyb = md5(substr($key, 16, 16)); $keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length) : substr(md5(microtime()), -$ckey_length)) : ''; $cryptkey = $keya . md5($keya . $keyc); $key_length = strlen($cryptkey); $string = $operation == 'DECODE' ? base64_decode(strtr(substr($string, $ckey_length), '-_', '+/')) : sprintf('%010d', $expiry ? $expiry + time() : 0) . substr(md5($string . $keyb), 0, 16) . $string; $string_length = strlen($string); $result = ''; $box = range(0, 255); $rndkey = array(); for ($i = 0; $i <= 255; $i++) { $rndkey[$i] = ord($cryptkey[$i % $key_length]); } for ($j = $i = 0; $i < 256; $i++) { $j = ($j + $box[$i] + $rndkey[$i]) % 256; $tmp = $box[$i]; $box[$i] = $box[$j]; $box[$j] = $tmp; } for ($a = $j = $i = 0; $i < $string_length; $i++) { $a = ($a + 1) % 256; $j = ($j + $box[$a]) % 256; $tmp = $box[$a]; $box[$a] = $box[$j]; $box[$j] = $tmp; $result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256])); } if ($operation == 'DECODE') { if ((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26) . $keyb), 0, 16)) { return substr($result, 26); } else { return ''; } } else { return $keyc . rtrim(strtr(base64_encode($result), '+/', '-_'), '='); } }
文章来源: 多级分类展示PHP递归
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