Conversion function between php array and string_PHP tutorial

In PHP, if we want to convert a string into an array, we can use the functions str_split(), explode(), and preg_split(). If we want to convert the array into a string, we also have a function implode() function to directly connect the arrays. . ​

Let’s first look at converting strings into arrays

str_split()

print_r(str_split("Hello"));
?>

Array
(
[0] => H
[1] => e
[2] => l
[3] => l
[4] => o
)

explode()

$str = "Hello world. It's a beautiful day.";
print_r (explode(" ",$str));
?>

Results

Array
(
[0] => Hello
[1] => world.
[2] => It's
[3] => a
[4] => beautiful
[5] => day.
)

preg_split() function

The code is as follows

Copy code

代码如下	复制代码
$user_info = "+J+++G+++++w"; $fields = preg_split("/+{1,}/", $user_info); while ($x < sizeof($fields)) : print $fields[$x]. " "; $x++; endwhile; ?>

$user_info = "+J+++G+++++w";

$fields = preg_split("/+{1,}/", $user_info);

while ($x < sizeof($fields)) :

Print $fields[$x]. "

";

$x++;

endwhile;

?>

In summary, the functions of str_split() and explode() in PHP are the same and will not be introduced here.

代码如下	复制代码
$array = array('a','b','c'); echo implode($array); //结果  abc

Convert array to string

implode()

Example

The code is as follows	Copy code
$array = array('a','b','c'); echo implode($array); //result abc

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truehttp: //www.bkjia.com/PHPjc/445612.htmlTechArticleIn php, we need to convert strings into arrays. The functions we can use include str_split(), explode(), preg_split () function, if you convert an array into a string, we also have a function implode() function...