How to convert two-dimensional array into string in php

In PHP, we can use the implode() function to convert a two-dimensional array into a string. The implode() function is a function that combines array elements into a single string. Its usage is as follows:

implode(separator,array)

• separator: Optional parameter, which is the string separator. The default is the empty string.
• array: required parameters, to be combined into an array of strings.

When converting a two-dimensional array into a string, each sub-array needs to be converted into a string first and then combined using the implode() function. The following is an example code:

$array = array(
            array('apple','banana'),
            array('cherry','peach'),
            array('watermelon','orange')
         );

foreach($array as &$value){
    $value = implode(',',$value);
}

$string = implode(';',$array);
echo $string;

Code explanation:

First define a two-dimensional array $array, which contains 3 arrays. Then loop through the array, use the implode() function to convert the subarray into a string, and store the result in the original array. Finally, use the implode() function to combine the subarray strings into a string, using semicolons as delimiters. Finally, the string is output to the screen.

The output of the above code is as follows:

apple,banana;cherry,peach;watermelon,orange

That is, we successfully converted the two-dimensional array into a string.

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