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PHP has hundreds of base functions and thousands more from extensions. Prior to PHP version 5.3.0, functions are not first-class functions and can only be referenced by their name, whereas PHP 5.3.0 introduces closures. [35] User-defined functions can be created at any time and without being prototyped. [35]
String functions common to many languages are listed below, including the different names used. The below list of common functions aims to help programmers find the equivalent function in a language. Note, string concatenation and regular expressions are handled in separate pages. Statements in guillemets (« … ») are optional.
PHP has a direct module interface called SAPI for different web servers; [273] in case of PHP 5 and Apache 2.0 on Windows, it is provided in form of a DLL file called php5apache2.dll, [274] which is a module that, among other functions, provides an interface between PHP and the web server, implemented in a form that the server understands. This ...
All of the previous entry search functions can be replaced by general list-centric variants, such as find, find-if, find-if-not, as well as pertinent functions like position and its derivates. ;; Find an entry with the key "John Doe" and the value "555-1212".
or kernel space Administration console Additional protocol support Basic access authenti-cation Digest access authenti-cation SSL/TLS https CGI FCGI SCGI WSGI Java Servlets SSI ISAPI SSJS IPv6 HTTP/2 QUIC HTTP/3; AOLserver: Yes No Yes [b] [c] [d] [3] Yes Yes No Unknown No No Yes Unknown Unknown user Unknown Unknown Unknown Unknown ...
Unlike an inline function, the compiler has an intimate knowledge of an intrinsic function and can thus better integrate and optimize it for a given situation. Compilers that implement intrinsic functions may enable them only when a program requests optimization , otherwise falling back to a default implementation provided by the language ...
In languages with restricted identifier length, the use of prefixes limits the number of characters that can be used to identify what the function does; this is a particular problem for packages originally written in FORTRAN 77, which offered only 6 characters per identifier; for example, the name of the BLAS function DGEMM indicates that it ...
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