日期:2012-07-12  浏览次数:20592 次

函数Abs()

描述:

mixed abs (mixed number);

Returns the absolute value of number. If the argument number is float, return type is also float, otherwise it is int(返回所输的数字的绝对值,浮点型返回浮点型,其他返回整型)

函数Acos()

描述:

float acos (float arg);

Returns the arc cosine of arg in radians(返回角的余弦值)
Adabas D功能
函数ada_afetch()
描述:
fetch a result row into an array(返回结果到一个数组里)
函数ada_autocommit()
描述:
toggle autocommit behaviour

函数ada_close()
描述:
close a connection to an Adabas D server (关掉一个数据库的关联)

函数ada_commit()
描述:
commit a transaction (提交一个处理)

函数ada_connect()
描述:
connect to an Adabas D datasource(联接一个数据库)
函数ada_exec()
描述:
prepare and execute a SQL statement(执行一个SQL语句)
函数ada_fetchrow()
描述:
fetch a row from a result(从数据库中取一条记录)

函数ada_fieldname()
描述:
get the columnname(得到字段名)
函数ada_fieldnum()
描述:
get column number(得到字段的总数)

函数ada_fieldtype()
描述:
get the datatype of a field(取得字段的类型)

函数ada_freeresult()
描述:
free resources associated with a result

函数ada_numfields()
描述:
get the number of columns in a result(在结果中得到字段数目)

函数ada_numrows()
描述:
number of rows in a result(所取结果的记录数)

函数ada_result()
描述:
get data from results(得到结果的数据)

函数ada_resultall()
描述:
print result as HTML table(以HTML的格式输出结果)

函数ada_rollback()
描述:
rollback a transaction

函数apache_lookup_uri()
描述:
Perform a partial request for the specified URI and return all info about it,This performs a partial request for a URI. It goes just far enough to obtain all the important information about the given resource and returns this information in a class. The properties of the returned class are:

status:the_request、status_line、method、content_type、handler
uri:filename、path_info、args、boundary、no_cache、no_local_copy、 allowed、send_bodyct、bytes_sent、byterange、clength、unparsed_uri mtime、request_time

函数apache_note()
描述:
Get and set apache request notes,apache_note() is an Apache-specific function which gets and sets values in a request's notes table. If called with one argument, it returns the current value of note note_name . If called with two arguments, it sets the value of note note_name to note_value and returns the previous value of note note_name .

函数getallheaders()
描述:
Fetch all HTTP request headers(取得所有HTTP头部请求)
例子:
$headers = getallheaders();
while (list($header, $value) = each($headers)) {
echo "$header: $value
\n";
}
这个例子将显示返回所有最近的头部请求。
注:此函数只支持APACHE下的PHP

函数virtual()
描述:
virtual()
is an Apache-specific function which is equivalent to in mod_include. It performs an Apache sub-request. It is useful for including CGI scripts or .shtml files, or anything else that you would parse through Apache. Note that for a CGI script, the script must generate valid CGI headers. At the minimum that means it must generate a Content-type header.

数组函数

函数array()
描述:
建立一个数组
array array(...)传回一数组的值,这些值可以用=>来附值。
下面说明了如何构建一个二维数组,及如何指定这个数组的key,以及在正常的数组中以跳序的方式去指定数组的值。
Example 1. array()
example

$fruits = array(
"fruits" => array("a"=>"orange","b"=>"banana","c"=>"apple"),
"numbers" => array(1, 2, 3, 4, 5, 6),
"holes" => array("first", 5 => "second", "third")
);

函数array_walk()
描述:
函数的方式对每个数组的元素做处理
int array_walk (array arr, string func);
使用一个叫FUNC的函数对ARR的每个元素做处理,那些元素将当成是首传给FUNC的参数;如果FUNC需要超过一个参数,则在每次array_walk()呼叫FUNC时都产生一个警告信息,这些警告信息是可以消除的,只要把'@'符号加在array_walk()
之前即可。
注意:FUNC会直接对ARR中的元素做处理,所以任何元素的变化将直接改变其在数组中的值。
Example 1. array_walk() example

$fr