Introduction
In this article I describe the PHP Miscellaneous functions highlight_string, ignor_user_abort, pack, strip_whitespace and show_source. To learn some other FileSystem functions, go to:
- Misc Function in PHP: Part 1
- Misc Function in PHP: Part 2
PHP highlight_string() Function
The PHP Miscellaneous highlight_string function is used to highlight the syntax of a string and it returns the highlighted code as a string instead of printing it out or say it will return TRUE on success or FALSE on failure.
Syntax
| highlight_string(string,return) |
Parameter in highlight_string function
The parameter of the function is:
| Parameter |
Description |
| string |
It specifies the string to highlight. |
| return |
It you set this parameter to TRUE, then this function will return the highlighted code as a string. |
Example
An example of the function is:
<html>
<body>
<?php
highlight_string("Hello! <?php phpinfo();?>");
?>
</body>
</html>
Output
![highlight-string-function-in-php.gif]()
PHP ignore_user_abort() Function
The PHP Miscellaneous ignor_user_abort function set whether a disconnected client should abort script execution and it returns the previous setting, as an integer.
Syntax
| ignore_user_abort(setting) |
Parameter in ignore_user_abort function
The parameter of the function is:
| Parameter |
Description |
| setting |
If it set to TRUE then user aborts in a script. |
Example
An example of the function is:
<?php
print_r(ignore_user_abort());
?>
Output
![ignore-user-abort-function-in-php.gif]()
PHP pack() Function
The PHP Miscellaneous pack function is used to pack data into a binary string or set; it returns a binary string containing the data.
Syntax
Parameter in pack function
The parameters of the function are:
| Parameter |
Description |
| format |
It specifies the format to use when packing data and its possible values are:
- a - It specifies NUL-padded string.
- A - It specifies SPACE-padded string.
- c - It specifies signed char.
- C - It specifies unsigned char.
- d - It specifies double (machine dependent size and representation).
- f - It specifies float (machine dependent size and representation).
- h - It specifies hex string, low nibble first.
- H - It specifies hex string, high nibble first.
- i - signed integer (machine dependent size and byte order).
- I - It specifies unsigned integer (machine dependent size and byte order).
- l - It specifies signed long (always 32 bit, machine byte order).
- L - It specifies unsigned long (always 32 bit, machine byte order).
- n - It specifies unsigned short (always 16 bit, big endian byte order).
- N - It specifies unsigned long (always 32 bit, big endian byte order).
- s - It specifies signed short (always 16 bit, machine byte order).
- S - It specifies unsigned short (always 16 bit, machine byte order).
- v - It specifies unsigned short (always 16 bit, little endian byte order).
- V - It specifies unsigned long (always 32 bit, little endian byte order).
- x - It specifies NUL byte.
- X - It specifies Back up one byte.
- @ - It specifies NUL-fill to absolute position.
|
| args+ |
It specifies one or more arguments to be packed. |
Example
An example of the function is:
<?php
echo pack('C4', 128, 9, 176, 32)."</br>";
echo pack('C3',80,72,80);
?>
Output
![pack-function-in-php.gif]()
PHP strip_whitespace() Function
The PHP Miscellaneous strip_whitespace function is used to return the source code of the specified file with the PHP comment and whitespace removed or say it returns the stripped source code on success or an empty string on failure.
Syntax
| strip_whitespace(filename) |
Parameter in strip_whitespace function
The parameter of the function is:
| Parameter |
Description |
| filename |
It specifies the file to strip. |
Example
An example of the function is:
<?php
// PHP comment here
/*
* Another PHP comment
*/
echo php_strip_whitespace ("test.txt");
?>
Output
![strip-white-space-function-in-php.gif]()
View Source Code
![source-code.gif]()
PHP show_source() Function
The PHP Miscellaneous show_source function is the alias of the highlight_fie function, in other words it outputs a file with the PHP syntax highlighted and it returns the highlighted code as a string instated of printing it out.
Syntax
| show_source(filename,return) |
Parameter in show_source function
The parameter of the function is:
| Parameter |
Description |
| filename |
It specifies the file to display. |
| return |
If this parameter is set to true then this function will return the highlighted code as a string. |
Example
An example of the function is:
<html>
<body>
<?php
show_source("showsource.php");
?>
</body>
</html>
Output
![show-source-function-in-php.gif]()