Online PHP editor | perf for 7CkuX

@ 2013-07-29T06:38:56Z

<?php

echo 'null == false? ', (null == false) ? 'yes', 'no', '<br />';
echo 'null == 0?', (null == 0) ? 'yes', 'no', '<br />';
echo 'null == "0"?', (null == "0") ? 'yes', 'no', '<br />';
echo 'null == $undefined?', (null == $undefined) ? 'yes', 'no', '<br />';
echo 'null == ""?', (null == "") ? 'yes', 'no', '<br />';

echo 'false == 0?', (false == 0) ? 'yes', 'no', '<br />';
echo 'false == "0"?', (false == "0") ? 'yes', 'no', '<br />';
echo 'false == $undefined?', (false == $undefined) ? 'yes', 'no', '<br />';
echo 'false == ""?', (false == "") ? 'yes', 'no', '<br />';

echo '0 == "0"?', (0 == "0") ? 'yes', 'no', '<br />';
echo '0 == $undefined?', (0 == $undefined) ? 'yes', 'no', '<br />';
echo '0 == ""?', (0 == "") ? 'yes', 'no', '<br />';

echo '"0" == $undefined?', ("0" == $undefined) ? 'yes', 'no', '<br />';
echo '"0" == ""?', ("0" == "") ? 'yes', 'no', '<br />';

echo '$undefined == ""?', ($undefined == "") ? 'yes', 'no', '<br />';

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)
5.5.1	0.013	0.063	19.31
5.5.0	0.010	0.067	19.26
5.4.17	0.007	0.077	19.14
5.4.16	0.010	0.070	18.83
5.4.15	0.000	0.053	19.12
5.4.14	0.007	0.077	16.27
5.4.13	0.007	0.060	16.30
5.4.12	0.010	0.047	16.50
5.4.11	0.003	0.077	16.34
5.4.10	0.003	0.037	16.45
5.4.9	0.003	0.077	16.41
5.4.8	0.007	0.050	16.36
5.4.7	0.003	0.067	16.38
5.4.6	0.020	0.047	16.25
5.4.5	0.007	0.037	16.37
5.4.4	0.010	0.067	16.29
5.4.3	0.020	0.060	16.36
5.4.2	0.007	0.073	16.34
5.4.1	0.007	0.070	16.34
5.4.0	0.007	0.070	15.82
5.3.27	0.007	0.080	14.69
5.3.26	0.010	0.077	14.53
5.3.25	0.007	0.067	14.40
5.3.24	0.017	0.037	14.52
5.3.23	0.010	0.073	14.53
5.3.22	0.000	0.047	14.66
5.3.21	0.000	0.053	14.51
5.3.20	0.003	0.047	14.55
5.3.19	0.007	0.080	14.50
5.3.18	0.013	0.070	14.51
5.3.17	0.003	0.053	14.50
5.3.16	0.007	0.070	14.51
5.3.15	0.003	0.043	14.66
5.3.14	0.010	0.073	14.48
5.3.13	0.003	0.053	14.47
5.3.12	0.003	0.060	14.52
5.3.11	0.020	0.060	14.43
5.3.10	0.003	0.083	13.99
5.3.9	0.013	0.063	13.81
5.3.8	0.017	0.063	14.11
5.3.7	0.003	0.080	13.94
5.3.6	0.013	0.063	13.82
5.3.5	0.013	0.057	13.96
5.3.4	0.003	0.063	13.76
5.3.3	0.000	0.050	13.84
5.3.2	0.003	0.040	13.63
5.3.1	0.007	0.033	13.55
5.3.0	0.000	0.073	13.61

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