3v4l.org

run code in 300+ PHP versions simultaneously
<?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).

VersionSystem time (s)User time (s)Memory (MiB)
5.4.170.0130.07019.07
5.4.160.0030.05019.05
5.4.150.0000.05718.90
5.4.140.0130.06316.30
5.4.130.0070.07716.22
5.4.120.0000.06016.40
5.4.110.0070.04716.30
5.4.100.0000.04316.47
5.4.90.0070.05316.31
5.4.80.0170.06016.46
5.4.70.0170.07016.36
5.4.60.0100.06716.49
5.4.50.0100.06716.38
5.4.40.0000.08316.33
5.4.30.0070.06016.30
5.4.20.0030.05016.36
5.4.10.0070.06016.27
5.4.00.0170.06315.95
5.3.270.0070.06014.39
5.3.260.0130.06714.39
5.3.250.0070.08314.53
5.3.240.0130.04314.53
5.3.230.0070.06014.57
5.3.220.0030.06714.50
5.3.210.0130.03014.53
5.3.200.0000.04314.36
5.3.190.0130.05314.49
5.3.180.0070.07314.38
5.3.170.0070.07714.36
5.3.160.0100.07314.50
5.3.150.0100.06714.35
5.3.140.0100.06714.46
5.3.130.0000.08014.50
5.3.120.0070.07714.54
5.3.110.0030.04014.34
5.3.100.0000.08313.91
5.3.90.0030.06013.98
5.3.80.0030.05313.95
5.3.70.0070.07014.04
5.3.60.0070.04014.02
5.3.50.0030.08013.88
5.3.40.0030.06013.87
5.3.30.0100.03313.86
5.3.20.0070.06713.78
5.3.10.0070.05713.59
5.3.00.0030.04013.62

preferences:
139.85 ms | 1386 KiB | 7 Q