An explanation of the performance between php implode/explode, serialize, json, and msgpack

php implode/explode, serialize, json, msgpack performance comparison

Use firstimplode, serialize, json_encode, msgpack_packCreate four text files for testing.

The creation code is as follows:

<?php
$arr = array(
    &#39;content1&#39; => &#39;一二三四五六七八九十&#39;,
    &#39;content2&#39; => &#39;一二三四五六七八九十&#39;,
    &#39;content3&#39; => &#39;一二三四五六七八九十&#39;
);
echo file_put_contents(&#39;implode.txt&#39;, implode(&#39;,&#39;,$arr), true).&#39;<br>&#39;;
echo file_put_contents(&#39;serialize.txt&#39;, serialize($arr), true).&#39;<br>&#39;;
echo file_put_contents(&#39;json.txt&#39;, json_encode($arr), true).&#39;<br>&#39;;
echo file_put_contents(&#39;msgpack.txt&#39;, msgpack_pack($arr), true);
?>

Generate after creation

implode.txt 92 bytes
serialize.txt 165 bytes
json.txt 223 bytes
msgpack.txt 121 bytes

##Generated string size The order is as follows implode

If the array is simple, json_encode may be smaller than serialize

For example:

$arr = array('一','二','三','四','五','六','七','八','九','十');

serialize is 147 bytes

##json_encode is 91 bytes

Compare implode, serialize, json_encode, msgpack_pack performance

<?php
$arr = array(
    &#39;content1&#39; => &#39;一二三四五六七八九十&#39;,
    &#39;content2&#39; => &#39;一二三四五六七八九十&#39;,
    &#39;content3&#39; => &#39;一二三四五六七八九十&#39;
);
$start = microtime(true);
$i = 1000000;
while($i>0){
    // 分别测试运行时间及内存使用情况
    $tmp = implode(&#39;,&#39;,$arr);
    // $tmp = serialize($arr);
    // $tmp = json_encode($arr);
    // $tmp = msgpack_pack($arr);
    $i--;
}
$end = microtime(true);
echo &#39;run time:&#39;.($end-$start).&#39;s<br>&#39;;
echo &#39;memory usage:&#39;.(memory_get_usage()/1024).&#39;KB&#39;;
?>

implode       1.3225722312927s    628.50KB
serialize     2.0553789138794s    628.32KB
json_encode   2.5058920383453s    628.34KB
msgpack_pack  1.6431028842926s    628.24KB

Result: Memory usage is similar, run Timeimplode

##Compare explode, unserialize, json_decode , msgpack_unpack performance

<?php
$data = file_get_contents(&#39;implode.txt&#39;);
//$data = file_get_contents(&#39;serialize.txt&#39;);
//$data = file_get_contents(&#39;json.txt&#39;);
//$data = file_get_contents(&#39;msgpack.txt&#39;);
$start = microtime(true);
$i = 1000000;
while($i>0){
    $tmp = explode(&#39;,&#39;,$data);
    //$tmp = unserialize($data);
    //$tmp = json_decode($data, true);
    //$tmp = msgpack_unpack($data);
    $i--;
}
$end = microtime(true);
echo &#39;run time:&#39;.($end-$start).&#39;s<br>&#39;;
echo &#39;memory usage:&#39;.(memory_get_usage()/1024).&#39;KB&#39;;
?>

explode         1.7446749210358s    628.74KB
unserialize     2.1386790275574s    628.67KB
json_decode     5.2423169612885s    628.84KB
msgpack_unpack  2.2290098667145s    628.63KB

Result: Memory usage is similar, running time

explode Summary, since implode/explode is not suitable for using complex structures, serialize, json, and msgpack are commonly used.

Among the three comparisons, the optimal running speed, memory usage, and space usage are msgpack, followed by serialize, and finally json.

If conditions permit,

It is recommended to use msgpack to serialize the data

. About msgpack, you can check out the article I wrote before: "MessagePack Serialization Format"

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