Online PHP editor | perf for EX86b

@ 2024-04-28T18:14:00Z

<?php

ini_set( 'display_errors', 1 );
error_reporting( E_ALL );

//  Make a bit, honkin test array
//  You may need to adjust this depth to avoid memory limit errors
$testArray = [
    'string' => 'string',
    'int' => 1,
    'float' => 1.1,
    'bool' => true,
    'date' => new Datetime('now'),
    'array' => [
        'string' => 'string',
        'int' => 1,
        'float' => 1.1,
        'bool' => true,
        'date' => new Datetime('now'),
        'array' => [
            'string' => 'string',
            'int' => 1,
            'float' => 1.1,
            'bool' => true,
            'date' => new Datetime('now'),
        ],
    ],
    fillArray(0, 5)
];

$numRuns = 10000000;
//  Time json encoding
$start = microtime( true );
for ($i = 0; $i++; $i <= $numRuns) {
    json_encode( $testArray );
}

$jsonTime = (microtime( true ) - $start);
echo "JSON encoded in " . ($jsonTime/$numRuns) . " seconds\n";

//  Time serialization
$start = microtime( true );
for ($i = 0; $i++; $i <= $numRuns) {
    serialize( $testArray );
}

$serializeTime = (microtime( true ) - $start);
echo "PHP serialized in " . ($serializeTime/$numRuns) . " seconds\n";

//  Compare them
if ( $jsonTime < $serializeTime )
{
    echo "json_encode() was roughly " . number_format( ($serializeTime / $jsonTime - 1 ) * 100, 2 ) . "% faster than serialize()";
}
else if ( $serializeTime < $jsonTime )
{
    echo "serialize() was roughly " . ($serializeTime ? number_format( ($jsonTime / $serializeTime - 1) * 100, 2 ) . '%' : 'insanely') . " faster than json_encode()";
} else {
    echo 'This is a draw';
}

function fillArray( $depth, $max )
{
    static $seed;
    if ( is_null( $seed ) )
    {
        $seed = array( 'a', 2, 'c', 4, 'e', 6, 'g', 8, 'i', 10 );
    }
    if ( $depth < $max )
    {
        $node = array();
        foreach ( $seed as $key )
        {
            $node[$key] = fillArray( $depth + 1, $max );
        }
        return $node;
    }
    return 'empty';
}

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
8.4.2	0.049	0.021	25.37
8.4.1	0.041	0.016	25.33
8.3.19	0.021	0.012	24.21
8.3.15	0.019	0.012	24.33
8.3.14	0.032	0.021	24.13
8.3.13	0.033	0.027	23.95
8.3.12	0.050	0.006	24.00
8.3.11	0.041	0.016	23.80
8.3.10	0.045	0.018	23.88
8.3.9	0.037	0.015	24.31
8.3.8	0.044	0.029	23.93
8.3.7	0.033	0.021	23.93
8.3.6	0.044	0.018	24.56
8.3.5	0.029	0.013	24.56
8.3.4	0.020	0.017	25.38
8.3.3	0.030	0.013	25.23
8.3.2	0.029	0.013	25.36
8.3.1	0.044	0.014	25.17
8.3.0	0.037	0.011	25.34
8.2.27	0.019	0.008	24.08
8.2.26	0.022	0.018	24.02
8.2.25	0.031	0.017	24.17
8.2.24	0.038	0.019	24.14
8.2.23	0.040	0.017	24.20
8.2.22	0.031	0.021	23.88
8.2.21	0.028	0.012	24.13
8.2.20	0.032	0.011	23.79
8.2.19	0.031	0.022	23.85
8.2.18	0.033	0.022	24.55
8.2.17	0.053	0.009	25.29
8.2.16	0.040	0.023	25.52
8.2.15	0.028	0.021	25.40
8.2.14	0.048	0.012	25.34
8.2.13	0.032	0.015	25.38
8.2.12	0.036	0.017	25.32
8.2.11	0.032	0.016	25.51
8.2.10	0.024	0.022	25.53
8.2.9	0.035	0.018	25.41
8.2.8	0.038	0.024	25.35
8.2.7	0.030	0.017	25.32
8.2.6	0.032	0.015	25.54
8.2.5	0.031	0.022	25.50
8.2.4	0.043	0.017	25.55
8.2.3	0.037	0.015	25.35
8.2.2	0.040	0.014	25.47
8.2.1	0.036	0.009	25.30
8.2.0	0.030	0.018	25.39
8.1.31	0.020	0.030	23.73
8.1.30	0.020	0.014	24.02
8.1.29	0.025	0.008	23.78
8.1.28	0.029	0.015	24.48
8.1.27	0.029	0.017	25.26
8.1.26	0.030	0.023	25.38
8.1.25	0.033	0.020	25.29
8.1.24	0.028	0.011	25.40
8.1.23	0.030	0.012	25.35
8.1.22	0.039	0.015	25.35
8.1.21	0.031	0.021	25.09
8.1.20	0.035	0.015	25.31
8.1.19	0.031	0.013	25.20
8.1.18	0.032	0.008	25.14
8.1.17	0.036	0.018	25.18
8.1.16	0.026	0.015	25.34
8.1.15	0.029	0.012	25.16
8.1.14	0.027	0.017	25.31
8.1.13	0.029	0.014	25.20
8.1.12	0.036	0.014	25.21
8.1.11	0.021	0.016	25.25
8.1.10	0.023	0.015	25.22
8.1.9	0.028	0.014	25.30
8.1.8	0.026	0.015	25.27
8.1.7	0.033	0.022	25.20
8.1.6	0.033	0.008	25.29
8.1.5	0.038	0.015	25.36
8.1.4	0.036	0.018	25.26
8.1.3	0.042	0.010	25.30
8.1.2	0.032	0.013	25.39
8.1.1	0.031	0.019	25.31
8.1.0	0.026	0.016	25.24

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