对于WEB开发人员来说PHP基本是标配，其他的程序员也可能会编上几句PHP代码。今天给大家总结了33个实用的PHP代码片段，在用到时可以直接进行复制粘贴，非常方便。也可以用来丰富自己的代码库。
<?php
/** * 时间：0000-00-00 * 作者：xx * 超级有用、必须收藏的PHP代码样例 */class Helper {
/** * 友好显示var_dump */ static public function dump($var, $echo = true, $label = null, $strict = true) { $label = ( $label === null ) ? ‘‘ : rtrim($label) . ‘ ‘; if (!$strict) { if (ini_get(‘html_errors‘)) { $output = print_r($var, true); $output = "<pre>" . $label . htmlspecialchars($output, ENT_QUOTES) . "</pre>"; } else { $output = $label . print_r($var, true); } } else { ob_start(); var_dump($var); $output = ob_get_clean(); if (!extension_loaded(‘xdebug‘)) { $output = preg_replace("/\]\=\>\n(\s+)/m", "] => ", $output); $output = ‘<pre>‘ . $label . htmlspecialchars($output, ENT_QUOTES) . ‘</pre>‘; } } if ($echo) { echo $output; return null; } else return $output; }
/** * 获取客户端IP地址 */ static public function getClientIP() { static $ip = NULL; if ($ip !== NULL) return $ip; if (isset($_SERVER[‘HTTP_X_FORWARDED_FOR‘])) { $arr = explode(‘,‘, $_SERVER[‘HTTP_X_FORWARDED_FOR‘]); $pos = array_search(‘unknown‘, $arr); if (false !== $pos) unset($arr[$pos]); $ip = trim($arr[0]); } elseif (isset($_SERVER[‘HTTP_CLIENT_IP‘])) { $ip = $_SERVER[‘HTTP_CLIENT_IP‘]; } elseif (isset($_SERVER[‘REMOTE_ADDR‘])) { $ip = $_SERVER[‘REMOTE_ADDR‘]; } // IP地址合法验证 $ip = ( false !== ip2long($ip) ) ? $ip : ‘0.0.0.0‘; return $ip; }
/** * 循环创建目录 */ static public function mkdir($dir, $mode = 0777) { if (is_dir($dir) || @mkdir($dir, $mode)) return true; if (!mk_dir(dirname($dir), $mode)) return false; return @mkdir($dir, $mode); }
/** * 格式化单位 */ static public function byteFormat($size, $dec = 2) { $a = array("B", "KB", "MB", "GB", "TB", "PB"); $pos = 0; while ($size >= 1024) { $size /= 1024; $pos++; } return round($size, $dec) . " " . $a[$pos]; }
/** * 下拉框，单选按钮 自动选择 * * @param $string 输入字符 * @param $param 条件 * @param $type 类型 * selected checked * @return string */ static public function selected($string, $param = 1, $type = ‘select‘) {
if (is_array($param)) { $true = in_array($string, $param); } elseif ($string == $param) { $true = true; } if ($true) $return = $type == ‘select‘ ? ‘selected="selected"‘ : ‘checked="checked"‘;
echo $return; }
/** * 获得来源类型 post get * * @return unknown */ static public function method() { return strtoupper(isset($_SERVER[‘REQUEST_METHOD‘]) ? $_SERVER[‘REQUEST_METHOD‘] : ‘GET‘ ); }
/** * 提示信息 */ static public function message($action = ‘success‘, $content = ‘‘, $redirect = ‘javascript:history.back(-1);‘, $timeout = 4) {
switch ($action) { case ‘success‘: $titler = ‘操作完成‘; $class = ‘message_success‘; $images = ‘message_success.png‘; break; case ‘error‘: $titler = ‘操作未完成‘; $class = ‘message_error‘; $images = ‘message_error.png‘; break; case ‘errorBack‘: $titler = ‘操作未完成‘; $class = ‘message_error‘; $images = ‘message_error.png‘; break; case ‘redirect‘: header("Location:$redirect"); break; case ‘script‘: if (empty($redirect)) { exit(‘<script language="javascript">alert("‘ . $content . ‘");window.history.back(-1)</script>‘); } else { exit(‘<script language="javascript">alert("‘ . $content . ‘");window.location=" ‘ . $redirect . ‘ "</script>‘); } break; }
// 信息头部 $header = ‘<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"/><title>操作提示</title><style type="text/css">body{font:12px/1.7 "\5b8b\4f53",Tahoma;}html,body,div,p,a,h3{margin:0;padding:0;}.tips_wrap{ background:#F7FBFE;border:1px solid #DEEDF6;width:780px;padding:50px;margin:50px auto 0;}.tips_inner{zoom:1;}.tips_inner:after{visibility:hidden;display:block;font-size:0;content:" ";clear:both;height:0;}.tips_inner .tips_img{width:80px;float:left;}.tips_info{float:left;line-height:35px;width:650px}.tips_info h3{font-weight:bold;color:#1A90C1;font-size:16px;}.tips_info p{font-size:14px;color:#999;}.tips_info p.message_error{font-weight:bold;color:#F00;font-size:16px; line-height:22px}.tips_info p.message_success{font-weight:bold;color:#1a90c1;font-size:16px; line-height:22px}.tips_info p.return{font-size:12px}.tips_info .time{color:#f00; font-size:14px; font-weight:bold}.tips_info p a{color:#1A90C1;text-decoration:none;}</style></head>
<body>‘; // 信息底部 $footer = ‘</body></html>‘;
$body = ‘<script type="text/javascript"> function delayURL(url) { var delay = document.getElementById("time").innerHTML; //alert(delay); if(delay > 0){ delay--; document.getElementById("time").innerHTML = delay; } else { window.location.href = url; } setTimeout("delayURL(\‘" + url + "\‘)", 1000); } </script><div class="tips_wrap"> <div class="tips_inner"> <div class="tips_img"> <img src="‘ . Yii::app()->baseUrl . ‘/static/images/‘ . $images . ‘"/> </div> <div class="tips_info">
<p class=" . $class . ">‘ . $content . ‘</p> <p class="return">系统自动跳转在 <span class="time" id="time">‘ . $timeout . ‘ </span> 秒后，如果不想等待，<a href="‘ . $redirect . ‘">点击这里跳转</a></p> </div> </div></div><script type="text/javascript"> delayURL("‘ . $redirect . ‘"); </script>‘;
exit($header . $body . $footer); }
/** * 查询字符生成 */ static public function buildCondition(array $getArray, array $keys = array()) { if ($getArray) { foreach ($getArray as $key => $value) { if (in_array($key, $keys) && $value) { $arr[$key] = CHtml::encode(strip_tags($value)); } } return $arr; } }
/** * base64_encode */ static function b64encode($string) { $data = base64_encode($string); $data = str_replace(array(‘+‘, ‘/‘, ‘=‘), array(‘-‘, ‘_‘, ‘‘), $data); return $data; }
/** * base64_decode */ static function b64decode($string) { $data = str_replace(array(‘-‘, ‘_‘), array(‘+‘, ‘/‘), $string); $mod4 = strlen($data) % 4; if ($mod4) { $data .= substr(‘====‘, $mod4); } return base64_decode($data); }
/** * 验证邮箱 */ public static function email($str) { if (empty($str)) return true; $chars = "/^([a-z0-9+_]|\\-|\\.)[email protected](([a-z0-9_]|\\-)+\\.)+[a-z]{2,6}\$/i"; if (strpos($str, ‘@‘) !== false && strpos($str, ‘.‘) !== false) { if (preg_match($chars, $str)) { return true; } else { return false; } } else { return false; } }
/** * 验证手机号码 */ public static function mobile($str) { if (empty($str)) { return true; }
return preg_match(‘#^13[\d]{9}$|14^[0-9]\d{8}|^15[0-9]\d{8}$|^18[0-9]\d{8}$#‘, $str); }
/** * 验证固定电话 */ public static function tel($str) { if (empty($str)) { return true; } return preg_match(‘/^((\(\d{2,3}\))|(\d{3}\-))?(\(0\d{2,3}\)|0\d{2,3}-)?[1-9]\d{6,7}(\-\d{1,4})?$/‘, trim($str)); }
/** * 验证qq号码 */ public static function qq($str) { if (empty($str)) { return true; }
return preg_match(‘/^[1-9]\d{4,12}$/‘, trim($str)); }
/** * 验证邮政编码 */ public static function zipCode($str) { if (empty($str)) { return true; }
return preg_match(‘/^[1-9]\d{5}$/‘, trim($str)); }
/** * 验证ip */ public static function ip($str) { if (empty($str)) return true;
if (!preg_match(‘#^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$#‘, $str)) { return false; }
$ip_array = explode(‘.‘, $str);
//真实的ip地址每个数字不能大于255（0-255） return ( $ip_array[0] <= 255 && $ip_array[1] <= 255 && $ip_array[2] <= 255 && $ip_array[3] <= 255 ) ? true : false; }
/** * 验证身份证(中国) */ public static function idCard($str) { $str = trim($str); if (empty($str)) return true;
if (preg_match("/^([0-9]{15}|[0-9]{17}[0-9a-z])$/i", $str)) return true; else return false; }
/** * 验证网址 */ public static function url($str) { if (empty($str)) return true;
return preg_match(‘#(http|https|ftp|ftps)://([\w-]+\.)+[\w-]+(/[\w-./?%&=]*)?#i‘, $str) ? true : false; }
/** * 根据ip获取地理位置 * @param $ip * return :ip,beginip,endip,country,area */ public static function getlocation($ip = ‘‘) { $ip = new XIp(); $ipArr = $ip->getlocation($ip); return $ipArr; }
/** * 中文转换为拼音 */ public static function pinyin($str) { $ip = new XPinyin(); return $ip->output($str); }
/** * 拆分sql * * @param $sql */ public static function splitsql($sql) { $sql = preg_replace("/TYPE=(InnoDB|MyISAM|MEMORY)( DEFAULT CHARSET=[^; ]+)?/", "ENGINE=\\1 DEFAULT CHARSET=" . Yii::app()->db->charset, $sql); $sql = str_replace("\r", "\n", $sql); $ret = array(); $num = 0; $queriesarray = explode(";\n", trim($sql)); unset($sql); foreach ($queriesarray as $query) { $ret[$num] = ‘‘; $queries = explode("\n", trim($query)); $queries = array_filter($queries); foreach ($queries as $query) { $str1 = substr($query, 0, 1); if ($str1 != ‘#‘ && $str1 != ‘-‘) $ret[$num] .= $query; } $num++; } return ($ret); }
/** * 字符截取 * * @param $string * @param $length * @param $dot */ public static function cutstr($string, $length, $dot = ‘...‘, $charset = ‘utf-8‘) { if (strlen($string) <= $length) return $string;
$pre = chr(1); $end = chr(1); $string = str_replace(array(‘&‘, ‘"‘, ‘<‘, ‘>‘), array($pre . ‘&‘ . $end, $pre . ‘"‘ . $end, $pre . ‘<‘ . $end, $pre . ‘>‘ . $end), $string);
$strcut = ‘‘; if (strtolower($charset) == ‘utf-8‘) {
$n = $tn = $noc = 0; while ($n < strlen($string)) {
$t = ord($string[$n]); if ($t == 9 || $t == 10 || ( 32 <= $t && $t <= 126 )) { $tn = 1; $n++; $noc++; } elseif (194 <= $t && $t <= 223) { $tn = 2; $n += 2; $noc += 2; } elseif (224 <= $t && $t <= 239) { $tn = 3; $n += 3; $noc += 2; } elseif (240 <= $t && $t <= 247) { $tn = 4; $n += 4; $noc += 2; } elseif (248 <= $t && $t <= 251) { $tn = 5; $n += 5; $noc += 2; } elseif ($t == 252 || $t == 253) { $tn = 6; $n += 6; $noc += 2; } else { $n++; }
if ($noc >= $length) { break; } } if ($noc > $length) { $n -= $tn; }
$strcut = substr($string, 0, $n); } else { for ($i = 0; $i < $length; $i++) { $strcut .= ord($string[$i]) > 127 ? $string[$i] . $string[++$i] : $string[$i]; } }
$strcut = str_replace(array($pre . ‘&‘ . $end, $pre . ‘"‘ . $end, $pre . ‘<‘ . $end, $pre . ‘>‘ . $end), array(‘&‘, ‘"‘, ‘<‘, ‘>‘), $strcut);
$pos = strrpos($strcut, chr(1)); if ($pos !== false) { $strcut = substr($strcut, 0, $pos); } return $strcut . $dot; }
/** * 描述格式化 * @param $subject */ public static function clearCutstr($subject, $length = 0, $dot = ‘...‘, $charset = ‘utf-8‘) { if ($length) { return XUtils::cutstr(strip_tags(str_replace(array("\r\n"), ‘‘, $subject)), $length, $dot, $charset); } else { return strip_tags(str_replace(array("\r\n"), ‘‘, $subject)); } }
/** * 检测是否为英文或英文数字的组合 * * @return unknown */ public static function isEnglist($param) { if (!eregi("^[A-Z0-9]{1,26}$", $param)) { return false; } else { return true; } }
/** * 将自动判断网址是否加http:// * * @param $http * @return string */ public static function convertHttp($url) { if ($url == ‘http://‘ || $url == ‘‘) return ‘‘;
if (substr($url, 0, 7) != ‘http://‘ && substr($url, 0, 8) != ‘https://‘) $str = ‘http://‘ . $url; else $str = $url; return $str; }
/* 标题样式格式化 */
public static function titleStyle($style) { $text = ‘‘; if ($style[‘bold‘] == ‘Y‘) { $text .=‘font-weight:bold;‘; $serialize[‘bold‘] = ‘Y‘; }
if ($style[‘underline‘] == ‘Y‘) { $text .=‘text-decoration:underline;‘; $serialize[‘underline‘] = ‘Y‘; }
if (!empty($style[‘color‘])) { $text .=‘color:#‘ . $style[‘color‘] . ‘;‘; $serialize[‘color‘] = $style[‘color‘]; }
return array(‘text‘ => $text, ‘serialize‘ => empty($serialize) ? ‘‘ : serialize($serialize)); }
// 自动转换字符集 支持数组转换 static public function autoCharset($string, $from = ‘gbk‘, $to = ‘utf-8‘) { $from = strtoupper($from) == ‘UTF8‘ ? ‘utf-8‘ : $from; $to = strtoupper($to) == ‘UTF8‘ ? ‘utf-8‘ : $to; if (strtoupper($from) === strtoupper($to) || empty($string) || (is_scalar($string) && !is_string($string))) { //如果编码相同或者非字符串标量则不转换 return $string; } if (is_string($string)) { if (function_exists(‘mb_convert_encoding‘)) { return mb_convert_encoding($string, $to, $from); } elseif (function_exists(‘iconv‘)) { return iconv($from, $to, $string); } else { return $string; } } elseif (is_array($string)) { foreach ($string as $key => $val) { $_key = self::autoCharset($key, $from, $to); $string[$_key] = self::autoCharset($val, $from, $to); if ($key != $_key) unset($string[$key]); } return $string; } else { return $string; } }
/* 标题样式恢复 */
public static function titleStyleRestore($serialize, $scope = ‘bold‘) { $unserialize = unserialize($serialize); if ($unserialize[‘bold‘] == ‘Y‘ && $scope == ‘bold‘) return ‘Y‘; if ($unserialize[‘underline‘] == ‘Y‘ && $scope == ‘underline‘) return ‘Y‘; if ($unserialize[‘color‘] && $scope == ‘color‘) return $unserialize[‘color‘]; }
/** * 列出文件夹列表 * * @param $dirname * @return unknown */ public static function getDir($dirname) { $files = array(); if (is_dir($dirname)) { $fileHander = opendir($dirname); while (( $file = readdir($fileHander) ) !== false) { $filepath = $dirname . ‘/‘ . $file; if (strcmp($file, ‘.‘) == 0 || strcmp($file, ‘..‘) == 0 || is_file($filepath)) { continue; } $files[] = self::autoCharset($file, ‘GBK‘, ‘UTF8‘); } closedir($fileHander); } else { $files = false; } return $files; }
/** * 列出文件列表 * * @param $dirname * @return unknown */ public static function getFile($dirname) { $files = array(); if (is_dir($dirname)) { $fileHander = opendir($dirname); while (( $file = readdir($fileHander) ) !== false) { $filepath = $dirname . ‘/‘ . $file;
if (strcmp($file, ‘.‘) == 0 || strcmp($file, ‘..‘) == 0 || is_dir($filepath)) { continue; } $files[] = self::autoCharset($file, ‘GBK‘, ‘UTF8‘); ; } closedir($fileHander); } else { $files = false; } return $files; }
/** * [格式化图片列表数据] * * @return [type] [description] */ public static function imageListSerialize($data) {
foreach ((array) $data[‘file‘] as $key => $row) { if ($row) { $var[$key][‘fileId‘] = $data[‘fileId‘][$key]; $var[$key][‘file‘] = $row; } } return array(‘data‘ => $var, ‘dataSerialize‘ => empty($var) ? ‘‘ : serialize($var)); }
/** * 反引用一个引用字符串 * @param $string * @return string */ static function stripslashes($string) { if (is_array($string)) { foreach ($string as $key => $val) { $string[$key] = self::stripslashes($val); } } else { $string = stripslashes($string); } return $string; }
/** * 引用字符串 * @param $string * @param $force * @return string */ static function addslashes($string, $force = 1) { if (is_array($string)) { foreach ($string as $key => $val) { $string[$key] = self::addslashes($val, $force); } } else { $string = addslashes($string); } return $string; }
/** * 格式化内容 */ static function formatHtml($content, $options = ‘‘) { $purifier = new CHtmlPurifier(); if ($options != false) $purifier->options = $options; return $purifier->purify($content); }
}
?>
来源：景德镇SEO
原文地址：https://www.cnblogs.com/1994jinnan/p/12239314.html
时间： 2024-11-05 20:33:07