create_function() - php 选项信息函数

是丫丫呀2年前 (2023-11-21)阅读数 18#技术干货

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create_function()

(PHP 4 >= 4.0.1, PHP 5, PHP 7)

create_function() - php 选项信息函数

Create an anonymous (lambda-style) function

说明

create_function(string $args,string $code): string

Creates an anonymous function from the parameters passed, and returns a unique name for it.

Caution

This function internally performs aneval()and as such has the same security issues aseval(). Additionally it has bad performance and memory usage characteristics.

If you are using PHP 5.3.0 or newer a nativeanonymous functionshould be used instead.

参数

Usually these parameters will be passed as single quote delimited strings. The reason for using single quoted strings, is to protect the variable names from parsing, otherwise, if you use double quotes there will be a need to escape the variable names, e.g.$avar.$args

The function arguments.

$code

The function code.

返回值

Returns a unique function name as a string,orFALSEon error.

范例

Creating an anonymous function withcreate_function()

You can use this function, to (for example) create a function from information gathered at run time:

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