About the performance comparison between PHP5 and PHP7

                                                       

The interpreter of PHP is Zend Engine. Enter the Zend directory of the source code package. This is the core part of PHP and is mainly responsible for the syntax implementation of PHP. , memory management and script compilation and running environment, etc.

Related tutorials: "PHP7"

/opt/softpackage/php-5.6.8/Zend
/opt/softpackage/php-7.2.33/Zend
/opt/softpackage/php-7.4.0/Zend

Find the test file bench.php. There are a lot of test codes written in this file, such as

// 执行一百万次字符串 hallo 长度的计算
function simplecall() {
  for ($i = 0; $i < 1000000; $i++)
    strlen("hallo");
}

Execute /usr/local/php-5.6.8/bin/php bench.php, the test results are as follows

simple             0.657
simplecall         1.980
simpleucall        1.712
simpleudcall       1.935
mandel             2.531
mandel2            2.860
ackermann(7)       1.101
ary(50000)         0.282
ary2(50000)        0.147
ary3(2000)         1.557
fibo(30)           5.309
hash1(50000)       0.362
hash2(500)         0.348
heapsort(20000)    1.564
matrix(20)         0.857
nestedloop(12)     0.796
sieve(30)          0.737
strcat(200000)     0.079
------------------------
Total             24.813

Execute /usr/local/php -7.2.33/bin/php bench.php, the test results are as follows

simple             0.089
simplecall         0.037
simpleucall        0.156
simpleudcall       0.169
mandel             0.483
mandel2            0.566
ackermann(7)       0.148
ary(50000)         0.186
ary2(50000)        0.020
ary3(2000)         0.237
fibo(30)           0.519
hash1(50000)       0.062
hash2(500)         0.048
heapsort(20000)    0.120
matrix(20)         0.121
nestedloop(12)     0.265
sieve(30)          0.129
strcat(200000)     0.035
------------------------
Total              3.388

Execute /usr/local/php-7.4.0/bin/php bench.php, The test results are as follows

simple             0.059
simplecall         0.016
simpleucall        0.033
simpleudcall       0.052
mandel             0.144
mandel2            0.135
ackermann(7)       0.042
ary(50000)         0.169
ary2(50000)        0.007
ary3(2000)         0.060
fibo(30)           0.126
hash1(50000)       0.031
hash2(500)         0.028
heapsort(20000)    0.080
matrix(20)         0.049
nestedloop(12)     0.075
sieve(30)          0.030
strcat(200000)     0.014
------------------------
Total              1.151

Through comparison, it is found that the performance of PHP 7 has improved significantly. PHP 5 takes about 25 seconds to execute the test code, while PHP 7 does not exceed 4 seconds. In addition, PHP 7.4 has much better performance than PHP 7.2 improvement. Of course, the test results will be different in different test environments, but the performance improvement is definitely the same.

In addition, the Zend directory also has a more complex test file micro_bench.php. Interested partners can test it by themselves. If the stable version of PHP 8 is officially released, friends can also experience the performance of PHP 8 for themselves.

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