Online PHP editor | perf for 1PS65

@ 2024-11-07T11:25:02Z

<?php

// Benchmarking function with garbage collection disabled
function benchmark($callback, $iterations = 100)
{
    gc_disable(); // Disable garbage collection for clearer memory tracking

    $startTime = microtime(true);
    $startMemory = memory_get_peak_usage();

    for ($i = 0; $i < $iterations; $i++) {
        $callback();
    }

    $endTime = microtime(true);
    $endMemory = memory_get_peak_usage();

    gc_enable(); // Re-enable garbage collection

    return [
        'time' => $endTime - $startTime,
        'peak_memory' => $endMemory - $startMemory,
    ];
}

// Test data - larger arrays to better see memory impact
$baseArray = range(1, 1000);
$newData = range(1001, 2000);

// Method 1: Using array_merge in a loop
$mergeArray = $baseArray;
$mergeBenchmark = benchmark(function () use (&$mergeArray, $newData) {
    $tempArray = $mergeArray; // Clone array for memory comparison
    $mergeArray = array_merge($tempArray, $newData);
});

// Method 2: Using array unpacking in a loop
$unpackArray = $baseArray;
$unpackBenchmark = benchmark(function () use (&$unpackArray, $newData) {
    $tempArray = $unpackArray; // Clone array for memory comparison
    $unpackArray = [...$tempArray, ...$newData];
});

// Display results
echo "Array Merge:\n";
echo "Time: " . $mergeBenchmark['time'] . " seconds\n";
echo "Peak Memory: " . $mergeBenchmark['peak_memory'] . " bytes\n\n";

echo "Array Unpacking:\n";
echo "Time: " . $unpackBenchmark['time'] . " seconds\n";
echo "Peak Memory: " . $unpackBenchmark['peak_memory'] . " bytes\n";

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)
8.3.13	0.068	0.036	23.18
8.3.12	0.076	0.031	22.70
8.3.11	0.068	0.010	22.89
8.3.10	0.057	0.020	22.76
8.3.9	0.056	0.016	23.13
8.3.8	0.048	0.052	23.14
8.3.7	0.049	0.032	23.11
8.3.6	0.077	0.021	22.93
8.3.5	0.108	0.036	23.18
8.3.4	0.046	0.046	24.21
8.3.3	0.051	0.018	23.98
8.3.2	0.052	0.027	24.13
8.3.1	0.065	0.044	23.90
8.3.0	0.044	0.016	24.02
8.2.25	0.035	0.048	23.52
8.2.24	0.068	0.041	23.50
8.2.23	0.038	0.048	23.11
8.2.22	0.045	0.038	23.13
8.2.21	0.052	0.035	23.36
8.2.20	0.059	0.029	23.35
8.2.19	0.058	0.038	23.25
8.2.18	0.076	0.036	23.12
8.2.17	0.089	0.070	24.59
8.2.16	0.076	0.063	24.59
8.2.15	0.088	0.044	24.46
8.2.14	0.087	0.042	24.21
8.2.13	0.094	0.039	24.36
8.2.12	0.085	0.030	24.54
8.2.11	0.044	0.041	24.46
8.2.10	0.072	0.033	24.56
8.2.9	0.068	0.042	24.57
8.2.8	0.050	0.037	24.31
8.2.7	0.053	0.032	24.40
8.2.6	0.075	0.042	24.45
8.2.5	0.039	0.052	24.38
8.2.4	0.060	0.063	24.38
8.2.3	0.052	0.031	24.34
8.2.2	0.043	0.040	24.36
8.2.1	0.045	0.039	24.40
8.2.0	0.049	0.042	24.40
8.1.30	0.153	0.049	28.53
8.1.29	0.176	0.057	28.67
8.1.28	0.146	0.058	28.81
8.1.27	0.130	0.063	29.74
8.1.26	0.138	0.057	30.21
8.1.25	0.187	0.050	30.08
8.1.24	0.148	0.045	30.00
8.1.23	0.159	0.066	29.79
8.1.22	0.167	0.030	30.05
8.1.21	0.143	0.086	29.91
8.1.20	0.165	0.030	29.88
8.1.19	0.181	0.053	29.90
8.1.18	0.167	0.070	29.53
8.1.17	0.170	0.063	29.81
8.1.16	0.135	0.061	29.70
8.1.15	0.142	0.046	29.85
8.1.14	0.133	0.058	29.87
8.1.13	0.170	0.054	29.61
8.1.12	0.146	0.054	29.77
8.1.11	0.140	0.051	29.92
8.1.10	0.145	0.049	30.04
8.1.9	0.152	0.069	29.90
8.1.8	0.135	0.056	29.91
8.1.7	0.183	0.045	29.98
8.1.6	0.140	0.054	30.00
8.1.5	0.183	0.050	29.86
8.1.4	0.172	0.024	30.16
8.1.3	0.126	0.070	29.94
8.1.2	0.166	0.042	29.83
8.1.1	0.169	0.073	29.83
8.1.0	0.155	0.040	29.95

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