We classify functions that do not belong to other categories into the miscellaneous functions category.
Miscellaneous functions are an integral part of PHP core. No installation is required to use these functions.
The behavior of miscellaneous functions is affected by settings in the php.ini file.
Miscellaneous configuration options:
| name | default | describe | Can be changed |
|---|---|---|---|
| ignore_user_abort | "0" | FALSE indicates that the script will be terminated whenever it attempts output after the client terminates the connection. | PHP_INI_ALL |
| highlight.string | "#DD0000" | Color used to highlight strings that conform to PHP syntax. | PHP_INI_ALL |
| highlight.comment | "#FF8000" | Color used for highlighting PHP comments. | PHP_INI_ALL |
| highlight.keyword | "#007700" | Color used for syntax highlighting of PHP keywords (such as parentheses and semicolons). | PHP_INI_ALL |
| highlight.bg | "#FFFFFF" | Background color. | PHP_INI_ALL |
| highlight.default | "#0000BB" | Default color for PHP syntax. | PHP_INI_ALL |
| highlight.html | "#000000" | The color of the HTML code. | PHP_INI_ALL |
| browscap | NULL | The name and location of the browser capabilities file (for example: browscap.ini). | PHP_INI_SYSTEM |
PHP : Indicates the earliest PHP version that supports this function.
| function | describe | PHP |
|---|---|---|
| connection_aborted() | Check to see if the client is disconnected. | 3 |
| connection_status() | Returns the current connection status. | 3 |
| connection_timeout() | Deprecated in PHP 4.0.5. Check if the script has timed out. | 3 |
| constant() | Returns a constant value. | 4 |
| define() | Define a constant. | 3 |
| defined() | Check whether a constant exists. | 3 |
| die() | Output a message and exit the current script. | 3 |
| eval() | Treat strings as PHP code. | 3 |
| exit() | Output a message and exit the current script. | 3 |
| get_browser() | Returns the performance of the user's browser. | 3 |
| highlight_file() | PHP syntax highlighting for files. | 4 |
| highlight_string() | PHP syntax highlighting for strings. | 4 |
| ignore_user_abort() | Sets whether disconnecting from the remote client terminates script execution. | 3 |
| pack() | Load data into a binary string. | 3 |
| php_check_syntax() | Deprecated in PHP 5.0.5. | 5 |
| php_strip_whitespace() | Returns the source code file with PHP comments and whitespace characters removed. | 5 |
| show_source() | Alias for highlight_file(). | 4 |
| sleep() | Delay code execution for a number of seconds. | 3 |
| time_nanosleep() | Delay code execution for a number of seconds and nanoseconds. | 5 |
| time_sleep_until() | Delays code execution until a specified time. | 5 |
| uniqid() | Generate a unique ID. | 3 |
| unpack() | Unpack data from a binary string. | 3 |
| usleep() | Delay code execution for a number of microseconds. | 3 |
PHP : Indicates the earliest PHP version that supports this constant.
| constant | describe | PHP |
|---|---|---|
| CONNECTION_ABORTED | ||
| CONNECTION_NORMAL | ||
| CONNECTION_TIMEOUT | ||
| __COMPILER_HALT_OFFSET__ | 5 |