3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = "12345"; $time_start = microtime(true); echo $var[0] . "-" . substr($var,1) . "\n"; $time_end = microtime(true); echo "\nExecution Time: " . $time_end - $time_start; $time_start = microtime(true); echo str_replace($var[0], $var[0].'-', $var) . "\n"; $time_end = microtime(true); echo "\nExecution Time: " . $time_end - $time_start;
Output for 7.4.0
Deprecated: The behavior of unparenthesized expressions containing both '.' and '+'/'-' will change in PHP 8: '+'/'-' will take a higher precedence in /in/8Lk2k on line 7 Deprecated: The behavior of unparenthesized expressions containing both '.' and '+'/'-' will change in PHP 8: '+'/'-' will take a higher precedence in /in/8Lk2k on line 12 1-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 7 -1364228611.00021-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 12 -1364228611.0003
Output for 7.2.21 - 7.2.22, 7.2.24 - 7.2.25, 7.3.4, 7.3.8 - 7.3.9, 7.3.11 - 7.3.12
1-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 7 -1364228611.00021-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 12 -1364228611.0003
Output for 7.3.6, 7.3.10
1-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 7 -1364228611.00031-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 12 -1364228611.0003
Output for 7.2.8, 7.2.11, 7.2.17 - 7.2.19, 7.3.3, 7.3.5, 7.3.7
1-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 7 -1364228611.00021-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 12 -1364228611.0002
Output for 7.1.25 - 7.1.26, 7.1.28 - 7.1.30, 7.1.32 - 7.1.33, 7.2.1, 7.2.3, 7.2.6 - 7.2.7, 7.2.12 - 7.2.13, 7.2.20, 7.3.0 - 7.3.2
1-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 7 -1364228611.00011-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 12 -1364228611.0002
Output for 7.2.23
1-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 7 -1364228611.00031-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 12 -1364228611.0004
Output for 7.1.27, 7.1.31, 7.2.2, 7.2.4 - 7.2.5, 7.2.9 - 7.2.10
1-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 7 -1364228611.00011-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 12 -1364228611.0001
Output for 7.2.0
1-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 7 -1364228611.00011-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 12 -1364228611.0149
Output for 7.1.7
1-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 7 -1364228611.0031-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 12 -1364228611.003
Output for 7.1.6
1-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 7 -1364228611.0111-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 12 -1364228611.011
Output for 7.1.5
1-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 7 -1364228611.02021-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 12 -1364228611.0203
Output for 7.1.0
1-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 7 -1364228611.00631-2345 Warning: A non-numeric value encountered in /in/8Lk2k on line 12 -1364228611.0064
Output for 7.0.20
1-2345 -1364228611.00291-2345 -1364228611.0029
Output for 7.0.14
1-2345 -1364228611.00391-2345 -1364228611.0039
Output for 7.0.6
1-2345 -1462286906.61441-2345 -1462286906.6144
Output for 7.0.5
1-2345 -1459653495.6861-2345 -1459653495.6861
Output for 7.0.4
1-2345 -1457625345.03471-2345 -1457625345.0347
Output for 7.0.3
1-2345 -1458319253.4341-2345 -1458319253.434
Output for 7.0.2
1-2345 -1458686849.06711-2345 -1458686849.0672
Output for 7.0.1
1-2345 -1458788252.87571-2345 -1458788252.8757
Output for 7.0.0
1-2345 -1459050868.8241-2345 -1459050868.824
Output for 5.6.28
1-2345 -1364228611.00451-2345 -1364228611.0046
Output for 5.6.21
1-2345 -1462183111.53341-2345 -1462183111.5334
Output for 5.6.20
1-2345 -1460254607.92611-2345 -1460254607.9262
Output for 5.6.19
1-2345 -1457394242.20291-2345 -1457394242.2029
Output for 5.6.18
1-2345 -1458030916.43541-2345 -1458030916.4354
Output for 5.6.17
1-2345 -1458419337.50391-2345 -1458419337.5039
Output for 5.6.16
1-2345 -1459140133.05011-2345 -1459140133.0501
Output for 5.6.15
1-2345 -1459229589.92281-2345 -1459229589.9228
Output for 5.6.14
1-2345 -1459582163.76461-2345 -1459582163.7646
Output for 5.6.13
1-2345 -1460720798.99161-2345 -1460720798.9917
Output for 5.6.12
1-2345 -1461118393.73561-2345 -1461118393.7357
Output for 5.6.11
1-2345 -1461401010.83481-2345 -1461401010.8349
Output for 5.6.10
1-2345 -1461580740.27861-2345 -1461580740.2786
Output for 5.6.9
1-2345 -1461772043.23891-2345 -1461772043.2389
Output for 5.6.8
1-2345 -1461976295.35871-2345 -1461976295.3587
Output for 5.5.35
1-2345 -1463931680.13691-2345 -1463931680.1369
Output for 5.5.34
1-2345 -1460349035.7991-2345 -1460349035.799
Output for 5.5.33
1-2345 -1457491448.10941-2345 -1457491448.1094
Output for 5.5.32
1-2345 -1458217121.70931-2345 -1458217121.7094
Output for 5.5.31
1-2345 -1458516059.73661-2345 -1458516059.7366
Output for 5.5.30
1-2345 -1459495592.8651-2345 -1459495592.8651
Output for 5.5.29
1-2345 -1460859084.18141-2345 -1460859084.1814
Output for 5.5.28
1-2345 -1461216247.89521-2345 -1461216247.8953
Output for 5.5.27
1-2345 -1461309530.88951-2345 -1461309530.8895
Output for 5.5.26
1-2345 -1461676816.15941-2345 -1461676816.1594
Output for 5.5.25
1-2345 -1461874262.22881-2345 -1461874262.2288
Output for 5.5.24
1-2345 -1464058393.89221-2345 -1464058393.8923
Output for 5.4.45
1-2345 -1448046873.10761-2345 -1448046873.1076
Output for 5.4.44
1-2345 -1448046874.05361-2345 -1448046874.0536
Output for 5.4.43
1-2345 -1448046875.20561-2345 -1448046875.2056
Output for 5.4.42
1-2345 -1448046875.88881-2345 -1448046875.8888
Output for 5.4.41
1-2345 -1448046876.21351-2345 -1448046876.2135
Output for 5.4.40
1-2345 -1448046877.19151-2345 -1448046877.1916
Output for 5.4.39
1-2345 -1448046877.72591-2345 -1448046877.7259
Output for 5.4.38
1-2345 -1448046878.00931-2345 -1448046878.0093
Output for 5.4.37
1-2345 -1448046878.74261-2345 -1448046878.7426
Output for 5.4.36
1-2345 -1448046878.89561-2345 -1448046878.8957
Output for 5.4.35
1-2345 -1448046879.36181-2345 -1448046879.3618
Output for 5.4.34
1-2345 -1448046879.94541-2345 -1448046879.9454
Output for 5.4.32
1-2345 -1448046880.82541-2345 -1448046880.8254
Output for 5.4.31
1-2345 -1448046881.09391-2345 -1448046881.0939
Output for 5.4.30
1-2345 -1448046881.54551-2345 -1448046881.5455
Output for 5.4.29
1-2345 -1448046881.70861-2345 -1448046881.7086
Output for 5.4.28
1-2345 -1448046882.03751-2345 -1448046882.0376
Output for 5.4.27
1-2345 -1448046882.33781-2345 -1448046882.3378
Output for 5.4.26
1-2345 -1448046882.62391-2345 -1448046882.6239
Output for 5.4.25
1-2345 -1448046882.98421-2345 -1448046882.9842
Output for 5.4.24
1-2345 -1448046883.44931-2345 -1448046883.4493
Output for 5.4.23
1-2345 -1448046883.6151-2345 -1448046883.615
Output for 5.4.22
1-2345 -1448046884.34621-2345 -1448046884.3463
Output for 5.4.21
1-2345 -1448046884.49471-2345 -1448046884.4947
Output for 5.4.20
1-2345 -1448046884.79341-2345 -1448046884.7934
Output for 5.4.19
1-2345 -1448046885.35861-2345 -1448046885.3586
Output for 5.4.18
1-2345 -1448046885.67631-2345 -1448046885.6763
Output for 5.4.17
1-2345 -1448046886.18911-2345 -1448046886.1891
Output for 5.4.16
1-2345 -1448046886.6841-2345 -1448046886.684
Output for 5.4.15
1-2345 -1448046886.83851-2345 -1448046886.8385
Output for 5.4.14
1-2345 -1448046887.21631-2345 -1448046887.2164
Output for 5.4.13
1-2345 -1448046887.5561-2345 -1448046887.5561
Output for 5.4.12
1-2345 -1448046887.85551-2345 -1448046887.8555
Output for 5.4.11
1-2345 -1448046888.31151-2345 -1448046888.3115
Output for 5.4.10
1-2345 -1448046888.61881-2345 -1448046888.6188
Output for 5.4.9
1-2345 -1448046888.7441-2345 -1448046888.7441
Output for 5.4.8
1-2345 -1448046889.1791-2345 -1448046889.179
Output for 5.4.7
1-2345 -1448046889.4881-2345 -1448046889.488
Output for 5.4.6
1-2345 -1448046889.6471-2345 -1448046889.647
Output for 5.4.5
1-2345 -1448046890.1281-2345 -1448046890.128
Output for 5.4.4
1-2345 -1448046890.3771-2345 -1448046890.3771
Output for 5.4.3
1-2345 -1448046890.52621-2345 -1448046890.5263
Output for 5.4.2
1-2345 -1448046890.9451-2345 -1448046890.9451
Output for 5.4.1
1-2345 -1448046891.18921-2345 -1448046891.1892
Output for 5.4.0
1-2345 -1448046891.41151-2345 -1448046891.4115
Output for 5.3.29
1-2345 -1448046880.95271-2345 -1448046880.9528
Output for 5.3.28
1-2345 -1448046883.95211-2345 -1448046883.9522
Output for 5.3.27
1-2345 -1448046886.0191-2345 -1448046886.019
Output for 5.3.26
1-2345 -1448046886.47821-2345 -1448046886.4783
Output for 5.3.25
1-2345 -1448046886.9891-2345 -1448046886.9891
Output for 5.3.24
1-2345 -1448046887.35771-2345 -1448046887.3577
Output for 5.3.23
1-2345 -1448046887.70671-2345 -1448046887.7067
Output for 5.3.22
1-2345 -1448046888.00791-2345 -1448046888.008
Output for 5.3.21
1-2345 -1448046888.15471-2345 -1448046888.1547
Output for 5.3.20
1-2345 -1448046888.47771-2345 -1448046888.4778
Output for 5.3.19
1-2345 -1448046888.88071-2345 -1448046888.8807
Output for 5.3.18
1-2345 -1448046889.04881-2345 -1448046889.0489
Output for 5.3.17
1-2345 -1448046889.34391-2345 -1448046889.3439
Output for 5.3.16
1-2345 -1448046889.81031-2345 -1448046889.8104
Output for 5.3.15
1-2345 -1448046890.00861-2345 -1448046890.0087
Output for 5.3.14
1-2345 -1448046890.25131-2345 -1448046890.2514
Output for 5.3.13
1-2345 -1448046890.68811-2345 -1448046890.6881
Output for 5.3.12
1-2345 -1448046890.81231-2345 -1448046890.8123
Output for 5.3.11
1-2345 -1448046891.06641-2345 -1448046891.0664
Output for 5.3.10
1-2345 -1448046891.5721-2345 -1448046891.5721
Output for 5.3.9
1-2345 -1448046891.73031-2345 -1448046891.7303
Output for 5.3.8
1-2345 -1448046891.87051-2345 -1448046891.8705
Output for 5.3.7
1-2345 -1448046892.00131-2345 -1448046892.0014
Output for 5.3.6
1-2345 -1448046892.14241-2345 -1448046892.1424
Output for 5.3.5
1-2345 -1448046892.29571-2345 -1448046892.2957
Output for 5.3.4
1-2345 -1448046892.77921-2345 -1448046892.7792
Output for 5.3.3
1-2345 -1448046893.0811-2345 -1448046893.0811
Output for 5.3.2
1-2345 -1448046893.41781-2345 -1448046893.4179
Output for 5.3.1
1-2345 -1448046893.84891-2345 -1448046893.8489
Output for 5.3.0
1-2345 -1448046894.14921-2345 -1448046894.1492
Output for 5.2.17
1-2345 -1448046892.42721-2345 -1448046892.4273
Output for 5.2.16
1-2345 -1448046892.55981-2345 -1448046892.5599
Output for 5.2.15
1-2345 -1448046892.92761-2345 -1448046892.9276
Output for 5.2.14
1-2345 -1448046893.26221-2345 -1448046893.2622
Output for 5.2.13
1-2345 -1448046893.55431-2345 -1448046893.5543
Output for 5.2.12
1-2345 -1448046893.69411-2345 -1448046893.6941
Output for 5.2.11
1-2345 -1448046893.97561-2345 -1448046893.9756
Output for 5.2.10
1-2345 -1448046894.27821-2345 -1448046894.2783
Output for 5.2.9
1-2345 -1448046894.41721-2345 -1448046894.4172
Output for 5.2.8
1-2345 -1448046894.56421-2345 -1448046894.5643
Output for 5.2.7
1-2345 -1448046894.72251-2345 -1448046894.7226
Output for 5.2.6
1-2345 -1448046894.98211-2345 -1448046894.9821
Output for 5.2.5
1-2345 -1448046895.2351-2345 -1448046895.235
Output for 5.2.4
1-2345 -1448046895.35181-2345 -1448046895.3518
Output for 5.2.3
1-2345 -1448046895.49671-2345 -1448046895.4967
Output for 5.2.2
1-2345 -1448046895.65871-2345 -1448046895.6587
Output for 5.2.1
1-2345 -1448046896.16941-2345 -1448046896.1694
Output for 5.2.0
1-2345 -1448046896.30811-2345 -1448046896.3082
Output for 5.1.6
1-2345 -1448046896.43071-2345 -1448046896.4307
Output for 5.1.5
1-2345 -1448046896.67291-2345 -1448046896.6729
Output for 5.1.4
1-2345 -1448046896.98791-2345 -1448046896.9879
Output for 5.1.3
1-2345 -1448046897.13041-2345 -1448046897.1305
Output for 5.1.2
1-2345 -1448046897.27031-2345 -1448046897.2703
Output for 5.1.1
1-2345 -1448046897.49451-2345 -1448046897.4945
Output for 5.1.0
1-2345 -1448046897.60731-2345 -1448046897.6073
Output for 5.0.5
1-2345 -1448046897.85741-2345 -1448046897.8574
Output for 5.0.4
1-2345 -1448046898.10191-2345 -1448046898.1019
Output for 5.0.3
1-2345 -1448046898.3721-2345 -1448046898.3721
Output for 5.0.2
1-2345 -1448046898.66451-2345 -1448046898.6646
Output for 5.0.1
1-2345 -1448046898.92391-2345 -1448046898.924
Output for 5.0.0
1-2345 -1448046899.0721-2345 -1448046899.072
Output for 4.4.9
1-2345 -0.8355221-2345 -0.835567
Output for 4.4.8
1-2345 -0.0996271-2345 -0.099678
Output for 4.4.7
1-2345 -0.7874291-2345 -0.78747
Output for 4.4.6
1-2345 -0.9061161-2345 -0.906154
Output for 4.4.5
1-2345 -0.026141-2345 -0.026186
Output for 4.4.4
1-2345 -0.5547671-2345 -0.554811
Output for 4.4.3
1-2345 -0.8510031-2345 -0.851049
Output for 4.4.2
1-2345 -0.3824571-2345 -0.382505
Output for 4.4.1
1-2345 -0.7308161-2345 -0.730861
Output for 4.4.0
1-2345 -0.9791151-2345 -0.979145
Output for 4.3.11
1-2345 -0.225771-2345 -0.225812
Output for 4.3.10
1-2345 -0.4926951-2345 -0.492734
Output for 4.3.9
1-2345 -0.7756621-2345 -0.775696
Output for 4.3.8
1-2345 -0.2037961-2345 -0.203833
Output for 4.3.7
1-2345 -0.3107491-2345 -0.31078
Output for 4.3.6
1-2345 -0.4279111-2345 -0.42796
Output for 4.3.5
1-2345 -0.5993741-2345 -0.599404
Output for 4.3.4
1-2345 -0.7305691-2345 -0.730613
Output for 4.3.3
1-2345 -0.8335131-2345 -0.833541
Output for 4.3.2
1-2345 -0.9566381-2345 -0.956676
Output for 4.3.1
1-2345 -0.0630931-2345 -0.063119
Output for 4.3.0
1-2345 -0.1796741-2345 -0.17971
preferences:
188.78 ms | 401 KiB | 219 Q