Math function:
10 more commonly used standard red.
abs-Absolute Value
acos-Anti-cosine
acosh-Inverse hyperbolic cosine
asin-anyway Chord
asinh-Inverse hyperbolic sine
atan2-two-parameter tangent
atan-anyway cut
atanh-Inverse hyperbolic
How do I load documents with foreign and special characters?
Documents can contain foreign characters, such as:
Foreign characters (úóí?)
For example TRIDACNA foreign characters must precede the escape sequence. Foreign characters can be UTF-8
Based on common functions in PHP. Array_change_key_case-array array_chunk whose return string key names are all lowercase or uppercase-split an array into multiple array_combine-create an array, returns an array with the array value array_change_key_
These are functions that handle strings in a variety of ways. There are also special chapters in the regular expressions and URL processing sections.
See string entries for information on how strings work, especially about single quotes, double
Htmlspecialchars (), Htmlspecialchars_decode ()
Definition and usage
The Htmlspecialchars () function converts some pre-defined characters to HTML entities.
The predefined characters are:& (and number) becomes &"(double quotes) becomes"' (single
PHP String Handling functions
Addcslashes? Adds a backslash escape character to a partial character inside a stringAddslashes? Escapes characters inside a string in the specified mannerBin2Hex? Converts binary data to hexadecimal
PHP Learning Series (1)--String processing function (4), PHP function
16. The HEBREVC () function converts a right-to-left stream of Hebrew text to a left-to-right stream. It will also convert the new line (\ n) to。 Only ASCII characters between 224
xml| problem
Author: Angelgavin Origin: CSDN
How do I load documents with foreign and special characters?
Documents can contain foreign characters, such as:
Foreign characters (úóí?)
For example TRIDACNA foreign characters must precede the escape
Recently encountered a problem, the data contains Chinese quotation marks, the results are escaped stored in the database, the data when the use of Htmlspecialchars_decode the entity escaped back, the results found not effective, looked at the
The Htmlspecialchars () function converts some pre-defined characters to HTML entities. Function prototype: Htmlspecialchars (String,quotestyle,character-set) The predefined characters are:
& (and number) becomes
"(double quotes)
The format of a string is the processing of a string into a particular format. Usually the data that the user gives to the server from the form is in the form of strings, and in order to achieve the desired output, the strings need to be processed
Author: angelgavin Source: csdn
How can I load documents with foreign and special characters?
A document can contain foreign characters, for example:
Foreign characters (úóí ?)
For example, the foreign character of escape must be prefixed
Article Which is incorrect or ambiguous ~~~
Configurations and functions related to PhP string escaping are as follows:1. magic_quotes_runtime2. magic_quotes_gpc3. addslashes () and stripslashes ()4. mysql_escape_string ()5. addcslashes () and
PHP character escape Function Summary. sometimes, for the sake of security, we need to escape the character strings entered by the user, which may be incorrect or obscure ~~~
Configurations and functions related to PHP string escaping are as
PHP extension text processing-string and string functions are all string functions processed in various ways. There are also some special chapters in the regular expression and URL processing sections.
For more information about the operating
1 Find the character position function:
Strpos ($str, Search,[int]): Find the first position of search in $str starting with int;
Stripos ($str, search,[int]): function returns the position of the first occurrence of a string in another string. This
Phphtml entity character conversion what functions can php convert html entity symbol & amp; eacute;? Php has tried several functions. ------ Solution -------------------- echomb_convert_encoding (& amp; eacute;, & nbsp; UTF-8, & nbsp; HTML-ENTITIES)
PHP's self-contained string functions, date functions, array functions, and so on, can sometimes help us solve very complex problems, the use is relatively simple.The following summarizes the commonly used string functions.Addcslashes-adds a
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