php Oracle garbled solution: First run "select * from V$NLS_PARAMETERS;" through PLSQL to obtain the character set of Oracle; then correctly set the character set information of the server on the client.
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PHP Oracle Chinese garbled problem
Usually when connecting to Oracle with the default configuration, you will encounter garbled characters when processing Chinese. In fact, most people know that before the client connects to the Oracle server, the character set information of the server must be correctly set on the client. Through PLSQL Run "select * from V$NLS_PARAMETERS;" to get the character set of oracle. The variable NLS_CHARACTERSET corresponds to the character set we need. For example, here is "WE8ISO8859P1"
The method of setting the character set is as follows:
Method 1: Set environment variables before connecting
putenv("NLS_LANG=AMERICAN_AMERICA.WE8ISO8859P1"); $conn=oci_new_connect($config['username'], $config['password'],$config['database']);
Related introduction:
Oracle General Oracle Company;
Oracle Corporation, the full name of Oracle Corporation (Oracle Software Systems Co., Ltd.), is the world's largest enterprise software company, headquartered in Redwood Beach, California, USA. Officially entered the Chinese market in 1989. In 2013, Oracle surpassed IBM and became the world's second largest software company after Microsoft.
Method 2: Set environment variables when connecting
$conn=oci_new_connect($config['username'], $config['password'],$config['database'],'we8iso8859p1');
But soon you will find that the Chinese data read through the above settings does not set the encoding It can be displayed normally, but once used in the page (if the character set of the page is UTF8), it will still be garbled.
And even if it is converted from we8iso8859p1 -> utf-8, it will still be garbled.
In fact, after careful study, I found that oci8 automatically converts the data to the default encoding format of the operating system after obtaining the data with the database encoding WE8ISO8859P1. If the default encoding of the operating system I use is GBK, it will actually be read through OCI8. , the character encoding is GBK, so when using the page, the encoding conversion should be from GBK -> utf-8:
echo iconv('GBK','utf-8',$vo["USERNAME"]);
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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。

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