Solution to php Chinese garbled code conversion: 1. Set the encoding to "header('Content-Type: text/html; charset=utf-8');"; 2. Use functions such as "mb_convert_encoding" to perform Convert.
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PHP code Chinese output garbled code and transcoding issues
1.header('Content-Type:text/html;charset=utf-8'); To prevent Chinese garbled output in json format, write this line of code before output
2. Character transcoding: $a is the string to be transcoded, $encode is the encoding rule of $a, $to_encode is the encoding rule that $a will be converted to, $str_encode is the transcoded string,
(一): $encode = mb_detect_encoding($a, array("ASCII", 'UTF-8', "GB2312", "GBK", 'BIG5'));//获取当前字符串的编码 $str_encode = mb_convert_encoding($a, $to_encode, $encode);//将字符编码改为$to_encode (二):$str_encode = iconv($encode, $to_encode, $a);//例:$A = iconv("gbk", "utf-8", $A); (三):/** * 1.自动识别编码并转换为UTF-8 */ function characet($data){ if( !empty($data) ){ $fileType = mb_detect_encoding($data , array('UTF-8','GBK','LATIN1','BIG5')) ; if( $fileType != 'UTF-8'){ $data = mb_convert_encoding($data ,'utf-8' , $fileType); } } return $data; }
3. I wrote a small code that handles PHP code and outputs Chinese characters during http debugging:
//防止中文转码,遍历数据结果,每项单独urlencode, public function arrayUrlencode($array) { if (empty($array)) { return $array; } else { foreach ($array as $key =>$value) {//对每个数组元素进行urlencode if (is_array($value)) { $array[$key] =$this->arrayUrlencode($value); } else { $array[$key] =urlencode($value); } } } return $array; } //再整体urldecode public function arrayJsonencode($array) { $url_arr =$this->arrayUrlencode($array); $json_arr = json_encode($url_arr);//json 输出 return urldecode($json_arr); //整体urldecode }
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php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。


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