In PHP, arrays and strings are so common that PHP has two functions that can be converted between strings and arrays.
In PHP, arrays and strings are so common that PHP has two functions that can be converted between strings and arrays.
The Code is as follows:
$ Array = explode (separator, $ string );
$ String = implode (glue, $ array );
The key to using and understanding these two functions is the relationship between the separator and glue. When an array is converted into a string, the Delimiter is set-the character or code that is inserted into the array value in the generated string.
On the contrary, when you convert a string into an array, you must specify a delimiter to mark what should be converted into an independent array element. For example, start with a string:
$ S1 = 'mon-Tue-Wed-Thu-fri ';
$ Days_array = explode ('-', $ s1 );
The $ days_array variable is now an array with five elements. The Mon index of the element is 0, and the Tue index is 1.
$ S2 = implode (',', $ days_array );
$ S2
Variables are now a list of days in a week separated by commas: Mon, Tue, Wed, Thu, Fri
Example 1. explode () Example
The Code is as follows:
// Example 1
$ Pizza = "piece1 piece2 piece3 piece4 piece5 piece6 ";
$ Pieces = explode ("", $ pizza );
Echo $ pieces [0]; // piece1
Echo $ pieces [1]; // piece2
// Example 2
$ Data = "foo: *: 1023: 1000:/home/foo:/bin/sh ";
List ($ user, $ pass, $ uid, $ gid, $ gecos, $ home, $ shell) = explode (":", $ data );
Echo $ user; // foo
Echo $ pass ;//*
?>
Example 2. limit parameter example
The Code is as follows:
$ Str = 'one | two | three | four ';
// Positive limit
Print_r (explode ('|', $ str, 2 ));
// Negative limit
Print_r (explode ('|', $ str,-1 ));
?>
The above example will be output:
Array
(
[0] => one
[1] => two | three | four
)
Array
(
[0] => one
[1] => two
[2] => three
)
Note: this function can be safely used for binary objects.