How to decode larger integers in PHP

PHP decoding larger integers is also one of the more common test points during the PHP interview process. Then such an implementation is also very simple, we can decode it through the json_decode function.

# Let’s use a simple code example to introduce how PHP decodes large integers.

For example, a large integer example is as follows:

{“number”：123456789012345678901234567890}

The PHP code is as follows:

<?php
$json = &#39;{"number": 123456789012345678901234567890}&#39;;
var_dump(json_decode($json));

The print result is as follows:

json_decode function represents decoding a string in JSON format, accepting a JSON-encoded string and converting it into a PHP variable.

json_decode syntax:

mixed json_decode ( string $json [, bool $assoc = false [, int $depth = 512 [, int $options = 0 ]]] )

The parameter json represents the json string format string to be decoded. This function can only handle UTF-8 encoded data.

assoc, when this parameter is TRUE, array will be returned instead of object.

depth, specifies the recursion depth.

options, mask options for JSON decoding. There are now two supported options. The first one is JSON_BIGINT_AS_STRING, which is used to convert large integers into strings instead of the default float type. The second is JSON_OBJECT_AS_ARRAY, which has the same effect as setting assoc to TRUE.

This article is an introduction to the method of decoding large integers in PHP. It is very simple. I hope it will be helpful to friends in need!

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