Online PHP editor | perf for G9JjW

@ 2019-12-29T21:49:48Z

<?php

function randomString(int $stringLength, array $parts, string $delimeter = ' ') : string {
    $keys  = array_keys($parts); // Получаем массив ключей массива. Они упорядочены и идут с нулевого индекса.
    $count = count($keys);
    
    if (0 === $count) {
        return '';
    }

    $text = [];
    for($i = 1; $i <= $stringLength; $i++) { // Больше нравится когда написано конкретно "с первого до последнего"
        $text[] = $parts[$keys[random_int(0, $count - 1)]]; // Получаем значение по случайному ключу из массива ключей
    }
    
    return implode($delimeter, $text);
}

echo randomString(
    10, 
    [
        'a'     => 'lorem', 
        14      => 'ipsum', 
        'dolor' => 'dolor', 
        5       => 'sit', 
        'amet'  => 'amet'
    ]
);

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)
7.4.1	0.009	0.009	14.66
7.4.0	0.011	0.009	14.70
7.3.13	0.011	0.008	14.78
7.3.12	0.008	0.008	14.66
7.3.11	0.010	0.007	14.32
7.3.10	0.008	0.008	14.58
7.3.9	0.010	0.017	14.79
7.3.8	0.006	0.011	14.82
7.3.7	0.010	0.005	14.53
7.3.6	0.009	0.006	14.89
7.3.5	0.008	0.014	14.49
7.3.4	0.011	0.004	14.60
7.3.3	0.011	0.004	14.55
7.3.2	0.011	0.004	14.77
7.3.1	0.004	0.018	14.64
7.3.0	0.010	0.007	14.72
7.2.26	0.009	0.006	14.95
7.2.25	0.007	0.010	15.07
7.2.24	0.009	0.009	14.93
7.2.23	0.012	0.008	14.95
7.2.22	0.000	0.016	14.70
7.2.21	0.005	0.011	14.91
7.2.20	0.007	0.011	15.03
7.2.19	0.006	0.009	14.79
7.2.18	0.009	0.007	14.93
7.2.17	0.011	0.007	14.91
7.2.16	0.010	0.005	14.98
7.2.15	0.010	0.007	14.99
7.2.14	0.010	0.012	15.05
7.2.13	0.011	0.006	15.06
7.2.12	0.012	0.006	14.67
7.2.11	0.003	0.012	14.92
7.2.10	0.000	0.015	14.77
7.2.9	0.000	0.016	14.68
7.2.8	0.011	0.004	14.78
7.2.7	0.009	0.006	14.84
7.2.6	0.005	0.010	14.85
7.2.5	0.007	0.008	15.13
7.2.4	0.007	0.007	15.22
7.2.3	0.007	0.007	14.95
7.2.2	0.008	0.006	14.47
7.2.1	0.037	0.003	15.05
7.2.0	0.009	0.009	15.18

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