3v4l.org

run code in 300+ PHP versions simultaneously
<?php $c = array_combine(range(0, 1000), range(0, 1000)); $a = microtime(); isset($c[500]); $b = microtime(); echo $a - $b;
Output for 7.2.4, 7.3.7, 7.4.0
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -9.0E-6
Output for 7.2.9, 7.2.24, 7.3.12
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -2.1E-5
Output for 7.2.23, 7.3.11
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -1.2E-5
Output for 7.2.3, 7.3.10
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -1.7E-5
Output for 7.1.26, 7.1.33, 7.3.0, 7.3.6, 7.3.9
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -8.0E-6
Output for 7.2.8, 7.2.11, 7.3.8
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -1.5E-5
Output for 7.2.2, 7.2.14, 7.3.1, 7.3.5
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -1.4E-5
Output for 7.1.29, 7.1.31, 7.2.6, 7.2.12, 7.2.15 - 7.2.16, 7.2.19, 7.3.4
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -1.1E-5
Output for 7.2.18, 7.3.3
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -1.9E-5
Output for 7.2.10, 7.2.13, 7.2.22, 7.3.2
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -1.6E-5
Output for 7.1.27, 7.1.30, 7.2.17, 7.2.25
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -1.8E-5
Output for 7.2.21
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -2.2E-5
Output for 7.2.0 - 7.2.1, 7.2.20
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -1.3E-5
Output for 7.2.7
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -2.5E-5
Output for 7.2.5
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -1.0E-5
Output for 7.1.28, 7.1.32
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -7.0E-6
Output for 7.1.25
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -6.0E-6
Output for 7.1.7
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -5.0000000000002E-6
Output for 7.1.6
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -5.9999999999999E-6
Output for 7.1.0 - 7.1.5
Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 Notice: A non well formed numeric value encountered in /in/eKPWU on line 11 -7.0000000000001E-6
Output for 7.0.14 - 7.0.20
-7.9999999999998E-6
Output for 7.0.6
-6.000000000006E-6
Output for 7.0.4 - 7.0.5
-4.000000000004E-6
Output for 5.5.27, 5.6.8, 5.6.12, 5.6.15, 7.0.3
-9.0000000000368E-6
Output for 5.4.45, 5.5.26, 5.6.14, 5.6.18 - 5.6.19, 7.0.2
-8.000000000008E-6
Output for 5.6.20, 7.0.1
-7.000000000007E-6
Output for 7.0.0
-7.0000000000903E-6
Output for 5.6.21
-7.9999999999941E-6
Output for 5.2.6, 5.3.9, 5.3.27, 5.6.13, 5.6.17
-8.9999999999257E-6
Output for 5.6.16
-8.9999999999951E-6
Output for 5.2.3 - 5.2.5, 5.2.7, 5.2.11, 5.3.4 - 5.3.6, 5.3.8, 5.3.10 - 5.3.11, 5.3.25 - 5.3.26, 5.4.16, 5.4.21, 5.4.43, 5.6.10 - 5.6.11
-9.9999999999545E-6
Output for 5.2.9, 5.2.15, 5.2.17, 5.3.14 - 5.3.15, 5.3.20, 5.4.32, 5.6.9
-1.000000000001E-5
Output for 5.5.25, 5.6.7
-6.9999999999792E-6
Output for 5.5.35
-8.9999999999812E-6
Output for 5.2.14, 5.3.19, 5.5.34
-9.000000000009E-6
Output for 5.5.24, 5.5.30, 5.5.33
-7.0000000000348E-6
Output for 5.4.5, 5.5.32
-1.1000000000039E-5
Output for 5.5.31
-1.3000000000041E-5
Output for 5.5.29
-5.0000000000328E-6
Output for 5.5.28
-4.9999999999217E-6
Output for 5.4.40, 5.4.42, 5.4.44
-1.6000000000016E-5
Output for 5.4.41
-1.4999999999987E-5
Output for 5.4.39
-1.3999999999986E-5
Output for 5.4.38
-6.299999999998E-5
Output for 5.4.37
-2.6999999999999E-5
Output for 5.4.36
-4.1999999999986E-5
Output for 5.4.35
-1.8999999999991E-5
Output for 5.4.34
-1.7999999999962E-5
Output for 5.3.16, 5.4.4, 5.4.9, 5.4.31
-1.1999999999956E-5
Output for 5.3.3, 5.3.24, 5.4.8, 5.4.15, 5.4.24, 5.4.26 - 5.4.27, 5.4.30
-1.2000000000012E-5
Output for 5.2.2, 5.2.8, 5.3.7, 5.3.29, 5.4.0, 5.4.2, 5.4.7, 5.4.18 - 5.4.20, 5.4.23, 5.4.28 - 5.4.29
-1.0999999999983E-5
Output for 5.4.22, 5.4.25
-1.1000000000094E-5
Output for 5.4.17
-2.9999999999974E-5
Output for 5.4.14
-1.2999999999999E-5
Output for 5.3.0, 5.4.13
-1.0999999999997E-5
Output for 5.4.12
-1.1999999999984E-5
Output for 5.2.16, 5.4.11
-1.1000000000011E-5
Output for 5.3.18, 5.4.10
-9.9999999999822E-6
Output for 5.4.6
-2.4999999999997E-5
Output for 5.4.3
-1.299999999993E-5
Output for 5.4.1
-1.3999999999958E-5
Output for 5.3.2, 5.3.12, 5.3.23, 5.3.28
-1.0000000000066E-5
Output for 5.3.1, 5.3.22
-9.9999999999996E-6
Output for 5.3.21
-9.9999999999961E-6
Output for 5.3.17
-2.0999999999993E-5
Output for 5.3.13
-2.2999999999995E-5
Output for 5.2.13
-1.2999999999985E-5
Output for 5.2.12
-7.9999999999525E-6
Output for 5.2.10
-2.3999999999968E-5
Output for 5.2.1
-1.0999999999983E-05
Output for 5.2.0
-0.00017900000000004
Output for 5.1.0, 5.1.4 - 5.1.6
-9.0000000000368E-06
Output for 5.1.3
-9.9999999999545E-06
Output for 5.1.2
-8.9999999999257E-06
Output for 5.1.1
-1.299999999993E-05
Output for 5.0.5
-8.0000000000011E-06
Output for 5.0.4
-9.0000000000021E-06
Output for 5.0.3
-9.000000000009E-06
Output for 5.0.2
-1.3999999999986E-05
Output for 5.0.1
-1.3000000000013E-05
Output for 5.0.0
-1.4000000000014E-05
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_combine() in /in/eKPWU on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: array_combine() in /in/eKPWU on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_combine() in /in/eKPWU on line 3

preferences:
171.74 ms | 401 KiB | 222 Q