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The str class provides 4 perl-like methods for manipulating strings and other scalar variables.
Methods include:
pop() - Strip the rightmost character from a string and return the character.
push() - Join one or more scalar values onto the right end of a scalar variable.
The values are concatenated from left to right, in the order that they were specified.
shift() - Strip the leftmost character from a string and return the character.
unshift() - Join one or more scalar values onto the left end of a scalar variable.
The values are concatenated from right to left, in the order that they were specified.
Type: class, text functions
Version: 1.3
Requires: PHP 4.0.3pl1 or greater
Author: the mighty Indian
| <?php
class str
{
function pop (&$string)
{
if ( 0 == strlen ($string) || is_array ($string))
return FALSE;
$pop = substr ($string, -1);
$string = substr ($string, 0, -1);
return $pop;
}
function push (&$var)
{
if (is_array ($var) || is_object ($var) || is_resource ($var))
return FALSE;
$args = func_get_args ();
$var = implode ('', $args);
return strlen ($var);
}
function shift (&$string)
{
if ( 0 == strlen ($string) || is_array ($string))
return FALSE;
$unshift = substr ($string, 0, 1);
$string = substr ($string, 1);
return $unshift;
}
function unshift (&$var)
{
if (is_array ($var) || is_object ($var) || is_resource ($var))
return FALSE;
$args = array_reverse (func_get_args ());
$var = implode ('', $args);
return strlen ($var);
}
}
/*
+----------------------------------------------------------------------+
| FILE NAME: str.php |
+----------------------------------------------------------------------+
| The str class provides 4 perl-like methods for manipulating strings |
| and other scalar variables. |
| |
|--> WARNING: The following methods operate directly on the values <--|
|--> passed to them. pop and shift shorten the value passed, while <--|
|--> push and unshift make the first variable passed to the method <--|
|--> contain all of the values passed to the method. <--|
| |
| str::pop() method |
| ----------------- |
| Strip the rightmost character from a scalar variable and return the |
| character. |
| NOTE: pop() must be used on a variable and not a literal value. |
| |
| USAGE EXAMPLE: |
| $string = "Humpty Dumpty sat on a wall."; |
| $chr = str::pop ($string); |
| print $chr; // Contains "." |
| print $string; // Contains "Humpty Dumpty sat on a wall" |
| |
| str::push() method |
| ------------------ |
| Join one or more scalar values onto the right end of a scalar |
| variable. The values are concatenated from left to right, in the |
| order that they were specified. |
| NOTE: The first argument for push() must be a variable and not a |
| literal value. All other arguments may be literal values. |
| |
| USAGE EXAMPLE: |
| $string = "Humpty Dumpty sat on a wall.n"; |
| $string_2 = "Humpty Dumpty had a great fall.n"; |
| $length = str::push ($string, $string_2); |
| print $length; // Contains 61 |
| print $string; // Contains $string . $string_2 |
| |
| str::shift() method |
| ------------------- |
| Strip the leftmost character from a scalar variable and return the |
| character. |
| NOTE: shift() must be used on a variable and not a literal value. |
| |
| USAGE EXAMPLE: |
| $string = "Humpty Dumpty sat on a wall."; |
| $chr = str::shift ($string); |
| print $chr; // Contains "H" |
| print $string; // Contains "umpty Dumpty sat on a wall." |
| |
| str::unshift() method |
| ------------------ |
| Join one or more scalar values onto the left end of a scalar |
| variable. The values are concatenated from right to left, in the |
| order that they were specified. |
| NOTE: The first argument for unshift() must be a variable and not a |
| literal value. All other arguments may be literal values. |
| |
| USAGE EXAMPLE: |
| $string = 'fe'; |
| $length = str::unshift ($string, 'fi', 'fo', 'foo'); |
| print $length; // Contains 9 |
| print $string; // Contains "foofofife" |
+----------------------------------------------------------------------+
*/
?> | |
|
|
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