Online PHP editor | perf for 40D8F

@ 2014-11-19T03:22:17Z

<?php

//////////////////////////////////////////////////////////////////
// 
// This is not a difficult test, but it will test your ability to 
// read and write code as it might exist within our application. 
// 
// This should take less than 30 minutes.
// 
// Good luck!
// 
//////////////////////////////////////////////////////////////////

// Part One: Reading
//////////////////////////////

    // Your challenge here is to figure out what this code does.
    // Please change the variable names to something more appropriate,
    // and also comment it to the best of your ability.
    
    $s = 'typewriter';
    $t = array( );
    $a = str_split( $s );

    $o = array( );
    $o['a'] = array( 'q', 'w', 'z', 'x' );
    $o['b'] = array( 'v', 'f', 'g', 'h', 'n' );
    $o['c'] = array( 'x', 's', 'd', 'f', 'v' );
    $o['d'] = array( 'x', 's', 'w', 'e', 'r', 'f', 'v', 'c' );
    $o['e'] = array( 'w', 's', 'd', 'f', 'r' );
    $o['f'] = array( 'c', 'd', 'e', 'r', 't', 'g', 'b', 'v' );
    $o['g'] = array( 'r', 'f', 'v', 't', 'b', 'y', 'h', 'n' );
    $o['h'] = array( 'b', 'g', 't', 'y', 'u', 'j', 'm', 'n' );
    $o['i'] = array( 'u', 'j', 'k', 'l', 'o' );
    $o['j'] = array( 'n', 'h', 'y', 'u', 'i', 'k', 'm' );
    $o['k'] = array( 'u', 'j', 'm', 'l', 'o' );
    $o['l'] = array( 'p', 'o', 'i', 'k', 'm' );
    $o['m'] = array( 'n', 'h', 'j', 'k', 'l' );
    $o['n'] = array( 'b', 'g', 'h', 'j', 'm' );
    $o['o'] = array( 'i', 'k', 'l', 'p' );
    $o['p'] = array( 'o', 'l' );
    $o['r'] = array( 'e', 'd', 'f', 'g', 't' );
    $o['s'] = array( 'q', 'w', 'e', 'z', 'x', 'c' );
    $o['t'] = array( 'r', 'f', 'g', 'h', 'y' );
    $o['u'] = array( 'y', 'h', 'j', 'k', 'i' );
    $o['v'] = array( '', 'c', 'd', 'f', 'g', 'b' );    
    $o['w'] = array( 'q', 'a', 's', 'd', 'e' );
    $o['x'] = array( 'z', 'a', 's', 'd', 'c' );
    $o['y'] = array( 't', 'g', 'h', 'j', 'u' );
    $o['z'] = array( 'x', 's', 'a' );
    $o['1'] = array( 'q', 'w' );
    $o['2'] = array( 'q', 'w', 'e' );
    $o['3'] = array( 'w', 'e', 'r' );
    $o['4'] = array( 'e', 'r', 't' );
    $o['5'] = array( 'r', 't', 'y' );
    $o['6'] = array( 't', 'y', 'u' );
    $o['7'] = array( 'y', 'u', 'i' );
    $o['8'] = array( 'u', 'i', 'o' );
    $o['9'] = array( 'i', 'o', 'p' );
    $o['0'] = array( 'o', 'p' );

foreach( $a as $key => $value ) 
    {
        $u = $a;
 
    
        echo "Key: $key, value $value";
    }

    foreach( $a as $key => $value ) 
    {
        $u = $a;
 
    
        foreach( $o[$value] as $p )
        {
            $u[$key] = $p;
            $t[] = join( "", $u );
        }
    }
    
    print_r( $t );
    
    
foreach( $a as $key => $value ) 
    {
        $u = $a;
 
    
        echo ""
    }

?>

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)
5.4.35	0.004	0.035	12.06
5.4.34	0.003	0.037	12.05
5.4.32	0.007	0.035	12.55
5.4.31	0.004	0.043	12.55
5.4.30	0.004	0.039	12.55
5.4.29	0.008	0.036	12.54
5.4.28	0.007	0.034	12.44
5.4.27	0.005	0.038	12.44
5.4.26	0.007	0.037	12.44
5.4.25	0.003	0.040	12.44
5.4.24	0.005	0.037	12.44
5.4.23	0.007	0.037	12.43
5.4.22	0.003	0.039	12.43
5.4.21	0.009	0.031	12.43
5.4.20	0.003	0.039	12.43
5.4.19	0.004	0.038	12.43
5.4.18	0.008	0.033	12.43
5.4.17	0.007	0.035	12.43
5.4.16	0.008	0.034	12.43
5.4.15	0.002	0.040	12.43
5.4.14	0.006	0.037	12.12
5.4.13	0.004	0.037	12.10
5.4.12	0.006	0.034	12.07
5.4.11	0.004	0.037	12.06
5.4.10	0.007	0.034	12.06
5.4.9	0.005	0.038	12.06
5.4.8	0.005	0.041	12.06
5.4.7	0.004	0.036	12.05
5.4.6	0.003	0.039	12.05
5.4.5	0.005	0.037	12.05
5.4.4	0.007	0.033	12.04
5.4.3	0.002	0.040	12.04
5.4.2	0.005	0.035	12.04
5.4.1	0.009	0.032	12.05
5.4.0	0.003	0.039	11.54
5.3.29	0.003	0.042	12.80
5.3.28	0.006	0.037	12.71
5.3.27	0.005	0.040	12.73
5.3.26	0.004	0.041	12.72
5.3.25	0.008	0.035	12.72
5.3.24	0.006	0.037	12.72
5.3.23	0.006	0.039	12.71
5.3.22	0.004	0.038	12.68
5.3.21	0.004	0.040	12.68
5.3.20	0.003	0.039	12.68
5.3.19	0.007	0.039	12.68
5.3.18	0.005	0.037	12.67
5.3.17	0.005	0.038	12.67
5.3.16	0.002	0.039	12.67
5.3.15	0.004	0.039	12.67
5.3.14	0.005	0.037	12.66
5.3.13	0.005	0.041	12.66
5.3.12	0.005	0.040	12.66
5.3.11	0.009	0.036	12.66
5.3.10	0.006	0.037	12.12
5.3.9	0.009	0.034	12.10
5.3.8	0.007	0.036	12.09
5.3.7	0.008	0.035	12.10
5.3.6	0.005	0.038	12.08
5.3.5	0.010	0.041	12.02
5.3.4	0.009	0.042	12.03
5.3.3	0.008	0.032	11.99
5.3.2	0.005	0.036	11.76
5.3.1	0.007	0.033	11.73
5.3.0	0.006	0.035	11.72
5.2.17	0.005	0.030	9.23
5.2.16	0.002	0.032	9.23
5.2.15	0.002	0.033	9.23
5.2.14	0.008	0.027	9.22
5.2.13	0.005	0.029	9.18
5.2.12	0.005	0.028	9.18
5.2.11	0.005	0.030	9.19
5.2.10	0.003	0.031	9.19
5.2.9	0.005	0.029	9.19
5.2.8	0.006	0.029	9.18
5.2.7	0.004	0.031	9.18
5.2.6	0.003	0.031	9.13
5.2.5	0.008	0.026	9.10
5.2.4	0.007	0.029	9.09
5.2.3	0.006	0.042	9.06
5.2.2	0.006	0.038	9.05
5.2.1	0.006	0.029	8.97
5.2.0	0.005	0.028	8.83
5.1.6	0.001	0.027	8.13
5.1.5	0.004	0.025	8.14
5.1.4	0.003	0.025	8.12
5.1.3	0.003	0.027	8.47
5.1.2	0.004	0.026	8.49
5.1.1	0.004	0.026	8.21
5.1.0	0.002	0.027	8.21
5.0.5	0.003	0.021	6.70
5.0.4	0.005	0.017	6.55
5.0.3	0.006	0.028	6.37
5.0.2	0.002	0.020	6.34
5.0.1	0.002	0.021	6.31
5.0.0	0.003	0.031	6.30
4.4.9	0.001	0.017	4.78
4.4.8	0.002	0.015	4.75
4.4.7	0.001	0.017	4.75
4.4.6	0.003	0.015	4.76
4.4.5	0.003	0.014	4.77
4.4.4	0.008	0.020	4.71
4.4.3	0.004	0.014	4.76
4.4.2	0.007	0.011	4.85
4.4.1	0.002	0.017	4.85
4.4.0	0.005	0.023	4.76
4.3.11	0.001	0.017	4.67
4.3.10	0.001	0.017	4.66
4.3.9	0.003	0.014	4.63
4.3.8	0.004	0.023	4.60
4.3.7	0.002	0.015	4.63
4.3.6	0.002	0.014	4.63
4.3.5	0.001	0.017	4.63
4.3.4	0.003	0.024	4.56
4.3.3	0.001	0.017	3.37
4.3.2	0.002	0.016	3.34
4.3.1	0.000	0.017	3.30
4.3.0	0.010	0.020	6.76

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