<?php
$x = str_repeat('foo', 500000);
$y = 'bar';
$before = microtime(1);
$x . $y;
var_dump(microtime(1) - $before);
$x = str_repeat('foo', 500000);
$y = 'bar';
$before = microtime(1);
$x .= $y;
var_dump(microtime(1) - $before);
- Output for 7.3.12
- float(0.00079703330993652)
float(0)
- Output for 7.3.11
- float(0.00096297264099121)
float(9.5367431640625E-7)
- Output for 7.3.10
- float(0.00068807601928711)
float(9.5367431640625E-7)
- Output for 7.3.9
- float(0.0010778903961182)
float(8.8214874267578E-6)
- Output for 7.3.8
- float(0.0012660026550293)
float(6.9141387939453E-6)
- Output for 7.3.7
- float(0.00073599815368652)
float(0)
- Output for 7.3.6
- float(0.00072503089904785)
float(5.9604644775391E-6)
- Output for 7.3.5
- float(0.0010449886322021)
float(8.1062316894531E-6)
- Output for 7.3.4
- float(0.0009760856628418)
float(9.5367431640625E-7)
- Output for 7.3.3
- float(0.00094890594482422)
float(9.0599060058594E-6)
- Output for 7.3.2
- float(0.00038599967956543)
float(9.5367431640625E-7)
- Output for 7.3.1
- float(0.00037908554077148)
float(9.0599060058594E-6)
- Output for 7.3.0
- float(0.00037097930908203)
float(7.8678131103516E-6)
- Output for 7.2.24
- float(0.00075697898864746)
float(5.9604644775391E-6)
- Output for 7.2.23
- float(0.00069999694824219)
float(5.9604644775391E-6)
- Output for 7.2.22
- float(0.0012238025665283)
float(0)
- Output for 7.2.21
- float(0.00074315071105957)
float(1.1920928955078E-6)
- Output for 7.2.20
- float(0.00076794624328613)
float(1.1920928955078E-6)
- Output for 7.2.19
- float(0.00097298622131348)
float(9.5367431640625E-7)
- Output for 7.2.18
- float(0.00095200538635254)
float(7.1525573730469E-6)
- Output for 7.2.17
- float(0.00077295303344727)
float(9.5367431640625E-7)
- Output for 7.2.16
- float(0.00092887878417969)
float(9.5367431640625E-7)
- Output for 7.2.15
- float(0.00038814544677734)
float(9.5367431640625E-7)
- Output for 7.2.14
- float(0.00037693977355957)
float(1.1920928955078E-6)
- Output for 7.2.13
- float(0.00034189224243164)
float(6.9141387939453E-6)
- Output for 7.2.12
- float(0.00034809112548828)
float(5.0067901611328E-6)
- Output for 7.2.11
- float(0.00032901763916016)
float(5.0067901611328E-6)
- Output for 7.2.10
- float(0.00047183036804199)
float(7.8678131103516E-6)
- Output for 7.2.9
- float(0.00043010711669922)
float(8.1062316894531E-6)
- Output for 7.2.8
- float(0.00038409233093262)
float(5.0067901611328E-6)
- Output for 7.2.7
- float(0.00039291381835938)
float(9.0599060058594E-6)
- Output for 7.2.6
- float(0.00043511390686035)
float(1.1920928955078E-6)
- Output for 7.2.5
- float(0.00035309791564941)
float(1.1920928955078E-6)
- Output for 7.2.4
- float(0.0003821849822998)
float(6.9141387939453E-6)
- Output for 7.2.3
- float(0.00043106079101562)
float(9.5367431640625E-7)
- Output for 7.2.2
- float(0.00042319297790527)
float(8.1062316894531E-6)
- Output for 7.2.1
- float(0.00041103363037109)
float(7.8678131103516E-6)
- Output for 7.2.0
- float(0.00034379959106445)
float(0)
- Output for 7.1.33
- float(0.00033688545227051)
float(5.9604644775391E-6)
- Output for 7.1.32
- float(0.00046992301940918)
float(8.8214874267578E-6)
- Output for 7.1.31
- float(0.00046515464782715)
float(1.0013580322266E-5)
- Output for 7.1.30
- float(0.00052309036254883)
float(1.0013580322266E-5)
- Output for 7.1.29
- float(0.00045609474182129)
float(1.0013580322266E-5)
- Output for 7.1.28
- float(0.00038599967956543)
float(5.9604644775391E-6)
- Output for 7.1.27
- float(0.00037789344787598)
float(6.9141387939453E-6)
- Output for 7.1.26
- float(0.00033903121948242)
float(7.8678131103516E-6)
- Output for 7.1.25
- float(0.00039482116699219)
float(7.8678131103516E-6)
- Output for 7.1.7
- float(0.0060529708862305)
float(5.9604644775391E-6)
- Output for 7.1.6
- float(0.00063586235046387)
float(7.8678131103516E-6)
- Output for 7.1.5
- float(0.00045299530029297)
float(5.9604644775391E-6)
- Output for 7.1.0
- float(0.00036215782165527)
float(9.5367431640625E-7)
- Output for 7.0.20
- float(0.00025606155395508)
float(4.0531158447266E-6)
- Output for 7.0.14
- float(0.00035786628723145)
float(9.5367431640625E-7)
- Output for 7.0.9
- float(0.015953063964844)
float(1.1920928955078E-6)
- Output for 7.0.8
- float(0.0050070285797119)
float(9.5367431640625E-7)
- Output for 7.0.7
- float(0.0024149417877197)
float(9.5367431640625E-7)
- Output for 7.0.6
- float(0.0020041465759277)
float(9.5367431640625E-7)
- Output for 7.0.5
- float(0.0054140090942383)
float(9.5367431640625E-7)
- Output for 7.0.4
- float(0.00050997734069824)
float(9.5367431640625E-7)
- Output for 7.0.3
- float(0.0003659725189209)
float(9.5367431640625E-7)
- Output for 7.0.2
- float(0.00050210952758789)
float(9.5367431640625E-7)
- Output for 7.0.1
- float(0.00041699409484863)
float(9.5367431640625E-7)
- Output for 7.0.0
- float(0.00049495697021484)
float(1.1920928955078E-6)
- Output for 5.6.28
- float(0.00061297416687012)
float(1.9073486328125E-6)
- Output for 5.6.23
- float(0.00076103210449219)
float(9.5367431640625E-7)
- Output for 5.6.22
- float(0.00087499618530273)
float(1.1920928955078E-6)
- Output for 5.6.21
- float(0.00089001655578613)
float(9.5367431640625E-7)
- Output for 5.4.12, 5.6.20
- float(0.00078201293945312)
float(9.5367431640625E-7)
- Output for 5.6.19
- float(0.00089406967163086)
float(1.9073486328125E-6)
- Output for 5.6.18
- float(0.00057697296142578)
float(1.1920928955078E-6)
- Output for 5.6.17
- float(0.00075387954711914)
float(9.5367431640625E-7)
- Output for 5.6.16
- float(0.00085592269897461)
float(1.9073486328125E-6)
- Output for 5.5.13, 5.6.15
- float(0.00084805488586426)
float(9.5367431640625E-7)
- Output for 5.6.14
- float(0.00069713592529297)
float(1.1920928955078E-6)
- Output for 5.6.13
- float(0.00086688995361328)
float(1.1920928955078E-6)
- Output for 5.6.12
- float(0.00082707405090332)
float(9.5367431640625E-7)
- Output for 5.4.21, 5.6.11
- float(0.00072288513183594)
float(9.5367431640625E-7)
- Output for 5.6.10
- float(0.00074601173400879)
float(1.1920928955078E-6)
- Output for 5.6.9
- float(0.00080299377441406)
float(1.1920928955078E-6)
- Output for 5.6.8
- float(0.00069189071655273)
float(9.5367431640625E-7)
- Output for 5.6.7
- float(0.00089001655578613)
float(1.9073486328125E-6)
- Output for 5.6.6
- float(0.0008389949798584)
float(2.1457672119141E-6)
- Output for 5.6.5
- float(0.00079083442687988)
float(9.5367431640625E-7)
- Output for 5.6.4
- float(0.00074601173400879)
float(9.5367431640625E-7)
- Output for 5.6.3
- float(0.0007169246673584)
float(1.1920928955078E-6)
- Output for 5.6.2
- float(0.00077986717224121)
float(1.1920928955078E-6)
- Output for 5.6.1
- float(0.00085806846618652)
float(9.5367431640625E-7)
- Output for 5.6.0
- float(0.000946044921875)
float(2.1457672119141E-6)
- Output for 5.5.37
- float(0.00092911720275879)
float(1.9073486328125E-6)
- Output for 5.5.36
- float(0.00088906288146973)
float(1.1920928955078E-6)
- Output for 5.5.35
- float(0.00088620185852051)
float(9.5367431640625E-7)
- Output for 5.5.34
- float(0.00075292587280273)
float(2.1457672119141E-6)
- Output for 5.5.0, 5.5.33
- float(0.00086498260498047)
float(9.5367431640625E-7)
- Output for 5.5.32
- float(0.00083184242248535)
float(1.1920928955078E-6)
- Output for 5.5.31
- float(0.00080490112304688)
float(9.5367431640625E-7)
- Output for 5.5.30
- float(0.00085997581481934)
float(2.1457672119141E-6)
- Output for 5.5.29
- float(0.0007169246673584)
float(1.9073486328125E-6)
- Output for 5.5.28
- float(0.0006871223449707)
float(9.5367431640625E-7)
- Output for 5.5.27
- float(0.00076913833618164)
float(9.5367431640625E-7)
- Output for 5.5.26
- float(0.00076484680175781)
float(9.5367431640625E-7)
- Output for 5.5.25
- float(0.00056600570678711)
float(9.5367431640625E-7)
- Output for 5.5.24
- float(0.0006260871887207)
float(9.5367431640625E-7)
- Output for 5.5.23
- float(0.00078582763671875)
float(1.9073486328125E-6)
- Output for 5.5.22
- float(0.00070786476135254)
float(9.5367431640625E-7)
- Output for 5.4.13, 5.5.21
- float(0.0008702278137207)
float(9.5367431640625E-7)
- Output for 5.5.20
- float(0.00084590911865234)
float(1.1920928955078E-6)
- Output for 5.5.19
- float(0.00065994262695312)
float(1.1920928955078E-6)
- Output for 5.5.18
- float(0.00077986717224121)
float(9.5367431640625E-7)
- Output for 5.5.16
- float(0.00077199935913086)
float(9.5367431640625E-7)
- Output for 5.4.41, 5.5.15
- float(0.00079488754272461)
float(1.9073486328125E-6)
- Output for 5.5.14
- float(0.00075197219848633)
float(2.1457672119141E-6)
- Output for 5.5.12
- float(0.00084710121154785)
float(9.5367431640625E-7)
- Output for 5.5.11
- float(0.00078392028808594)
float(9.5367431640625E-7)
- Output for 5.5.10
- float(0.00082612037658691)
float(1.1920928955078E-6)
- Output for 5.5.9
- float(0.00085711479187012)
float(1.9073486328125E-6)
- Output for 5.5.8
- float(0.00072598457336426)
float(1.9073486328125E-6)
- Output for 5.5.7
- float(0.00082087516784668)
float(9.5367431640625E-7)
- Output for 5.5.6
- float(0.00079798698425293)
float(9.5367431640625E-7)
- Output for 5.4.0, 5.5.5
- float(0.0008540153503418)
float(2.1457672119141E-6)
- Output for 5.5.4
- float(0.00080704689025879)
float(1.1920928955078E-6)
- Output for 5.5.3
- float(0.00076198577880859)
float(9.5367431640625E-7)
- Output for 5.5.2
- float(0.00077581405639648)
float(9.5367431640625E-7)
- Output for 5.5.1
- float(0.00084877014160156)
float(9.5367431640625E-7)
- Output for 5.4.45
- float(0.00075292587280273)
float(9.5367431640625E-7)
- Output for 5.2.12, 5.3.14, 5.4.44
- float(0.00084209442138672)
float(9.5367431640625E-7)
- Output for 5.4.43
- float(0.00072813034057617)
float(1.9073486328125E-6)
- Output for 5.4.42
- float(0.00080513954162598)
float(9.5367431640625E-7)
- Output for 5.4.40
- float(0.0009000301361084)
float(1.9073486328125E-6)
- Output for 5.4.39
- float(0.00083494186401367)
float(9.5367431640625E-7)
- Output for 5.4.38
- float(0.00067400932312012)
float(9.5367431640625E-7)
- Output for 5.4.37
- float(0.0008089542388916)
float(2.1457672119141E-6)
- Output for 5.4.36
- float(0.0008552074432373)
float(9.5367431640625E-7)
- Output for 5.4.35
- float(0.00074481964111328)
float(9.5367431640625E-7)
- Output for 5.4.34
- float(0.00081682205200195)
float(2.1457672119141E-6)
- Output for 5.4.32
- float(0.00085306167602539)
float(2.1457672119141E-6)
- Output for 5.4.31
- float(0.00057291984558105)
float(1.1920928955078E-6)
- Output for 5.4.30
- float(0.00086522102355957)
float(1.1920928955078E-6)
- Output for 5.4.29
- float(0.00064492225646973)
float(0)
- Output for 5.4.28
- float(0.0007779598236084)
float(9.5367431640625E-7)
- Output for 5.4.10, 5.4.27
- float(0.00085806846618652)
float(1.9073486328125E-6)
- Output for 5.4.26
- float(0.00084710121154785)
float(2.1457672119141E-6)
- Output for 5.4.25
- float(0.00090122222900391)
float(1.9073486328125E-6)
- Output for 5.4.24
- float(0.00084114074707031)
float(9.5367431640625E-7)
- Output for 5.4.23
- float(0.0008540153503418)
float(1.1920928955078E-6)
- Output for 5.4.22
- float(0.00082993507385254)
float(9.5367431640625E-7)
- Output for 5.4.20
- float(0.00072598457336426)
float(1.1920928955078E-6)
- Output for 5.4.4, 5.4.19
- float(0.00085902214050293)
float(9.5367431640625E-7)
- Output for 5.4.18
- float(0.00058293342590332)
float(9.5367431640625E-7)
- Output for 5.4.17
- float(0.00085186958312988)
float(9.5367431640625E-7)
- Output for 5.4.16
- float(0.00088787078857422)
float(9.5367431640625E-7)
- Output for 5.4.15
- float(0.00076508522033691)
float(1.9073486328125E-6)
- Output for 5.4.14
- float(0.00060319900512695)
float(9.5367431640625E-7)
- Output for 5.4.11
- float(0.00066614151000977)
float(9.5367431640625E-7)
- Output for 5.4.9
- float(0.00086307525634766)
float(1.9073486328125E-6)
- Output for 5.4.8
- float(0.00076794624328613)
float(9.5367431640625E-7)
- Output for 5.4.7
- float(0.00080394744873047)
float(9.5367431640625E-7)
- Output for 5.4.6
- float(0.00081801414489746)
float(9.5367431640625E-7)
- Output for 5.4.5
- float(0.00063705444335938)
float(9.5367431640625E-7)
- Output for 5.4.3
- float(0.00083112716674805)
float(9.5367431640625E-7)
- Output for 5.4.2
- float(0.00081205368041992)
float(9.5367431640625E-7)
- Output for 5.4.1
- float(0.00078105926513672)
float(1.9073486328125E-6)
- Output for 5.3.29
- float(0.00056004524230957)
float(1.1920928955078E-6)
- Output for 5.3.28
- float(0.000762939453125)
float(9.5367431640625E-7)
- Output for 5.3.27
- float(0.00083589553833008)
float(9.5367431640625E-7)
- Output for 5.3.26
- float(0.00066709518432617)
float(9.5367431640625E-7)
- Output for 5.3.1, 5.3.25
- float(0.0008389949798584)
float(9.5367431640625E-7)
- Output for 5.3.24
- float(0.0009009838104248)
float(9.5367431640625E-7)
- Output for 5.3.23
- float(0.00063109397888184)
float(1.1920928955078E-6)
- Output for 5.3.22
- float(0.00065803527832031)
float(9.5367431640625E-7)
- Output for 5.3.21
- float(0.00080108642578125)
float(1.1920928955078E-6)
- Output for 5.3.20
- float(0.00088787078857422)
float(2.1457672119141E-6)
- Output for 5.3.19
- float(0.00071287155151367)
float(9.5367431640625E-7)
- Output for 5.3.18
- float(0.00081706047058105)
float(9.5367431640625E-7)
- Output for 5.3.17
- float(0.00080204010009766)
float(1.1920928955078E-6)
- Output for 5.3.16
- float(0.00070500373840332)
float(0)
- Output for 5.3.15
- float(0.00081491470336914)
float(1.9073486328125E-6)
- Output for 5.3.13
- float(0.00059914588928223)
float(0)
- Output for 5.3.12
- float(0.00079107284545898)
float(9.5367431640625E-7)
- Output for 5.3.11
- float(0.00081300735473633)
float(9.5367431640625E-7)
- Output for 5.3.10
- float(0.00084400177001953)
float(9.5367431640625E-7)
- Output for 5.3.9
- float(0.0005791187286377)
float(9.5367431640625E-7)
- Output for 5.3.8
- float(0.0005791187286377)
float(0)
- Output for 5.3.7
- float(0.00059294700622559)
float(0)
- Output for 5.3.6
- float(0.00082612037658691)
float(9.5367431640625E-7)
- Output for 5.3.5
- float(0.00093889236450195)
float(9.5367431640625E-7)
- Output for 5.3.4
- float(0.00056099891662598)
float(9.5367431640625E-7)
- Output for 5.3.3
- float(0.000823974609375)
float(9.5367431640625E-7)
- Output for 5.3.2
- float(0.00086593627929688)
float(1.1920928955078E-6)
- Output for 5.3.0
- float(0.00084900856018066)
float(1.1920928955078E-6)
- Output for 5.2.17
- float(0.00085115432739258)
float(1.1920928955078E-6)
- Output for 5.2.16
- float(0.00085592269897461)
float(9.5367431640625E-7)
- Output for 5.2.15
- float(0.0009620189666748)
float(1.9073486328125E-6)
- Output for 5.2.14
- float(0.00086808204650879)
float(1.1920928955078E-6)
- Output for 5.2.13
- float(0.00090503692626953)
float(9.5367431640625E-7)
- Output for 5.2.11
- float(0.0009310245513916)
float(9.5367431640625E-7)
- Output for 5.2.10
- float(0.00086402893066406)
float(1.9073486328125E-6)
- Output for 5.2.9
- float(0.00089812278747559)
float(9.5367431640625E-7)
- Output for 5.2.8
- float(0.00061392784118652)
float(9.5367431640625E-7)
- Output for 5.2.7
- float(0.00060892105102539)
float(9.5367431640625E-7)
- Output for 5.2.6
- float(0.00084614753723145)
float(1.1920928955078E-6)
- Output for 5.2.5
- float(0.00078701972961426)
float(2.1457672119141E-6)
- Output for 5.2.4
- float(0.00091981887817383)
float(9.5367431640625E-7)
- Output for 5.2.3
- float(0.00099897384643555)
float(9.5367431640625E-7)
- Output for 5.2.2
- float(0.00070095062255859)
float(1.1920928955078E-6)
- Output for 5.2.1
- float(0.00096392631530762)
float(9.5367431640625E-7)
- Output for 5.2.0
- float(0.00084590911865234)
float(9.5367431640625E-7)
- Output for 5.1.6
- float(0.00080084800720215)
float(9.5367431640625E-7)
- Output for 5.1.5
- float(0.00084805488586426)
float(1.1920928955078E-6)
- Output for 5.1.4
- float(0.00085687637329102)
float(9.5367431640625E-7)
- Output for 5.1.3
- float(0.0010020732879639)
float(1.9073486328125E-6)
- Output for 5.1.2
- float(0.00083684921264648)
float(1.9073486328125E-6)
- Output for 5.1.1
- float(0.00080299377441406)
float(1.9073486328125E-6)
- Output for 5.1.0
- float(0.00097417831420898)
float(2.1457672119141E-6)
- Output for 5.0.5
- float(0.00090503692626953)
float(1.9073486328125E-6)
- Output for 5.0.4
- float(0.0010130405426025)
float(1.9073486328125E-6)
- Output for 5.0.3
- float(0.00092792510986328)
float(3.0994415283203E-6)
- Output for 5.0.2
- float(0.00095796585083008)
float(1.9073486328125E-6)
- Output for 5.0.1
- float(0.0009009838104248)
float(1.9073486328125E-6)
- Output for 5.0.0
- float(0.00072622299194336)
float(1.9073486328125E-6)
- Output for 4.4.9
- float(0.001056)
float(4.0000000000001E-6)
- Output for 4.4.8
- float(0.001069)
float(4.0000000000001E-6)
- Output for 4.4.7
- float(0.000866)
float(3.9999999999997E-6)
- Output for 4.4.6
- float(0.000996)
float(3.0E-6)
- Output for 4.4.5
- float(0.001057)
float(4.0000000000001E-6)
- Output for 4.4.4
- float(0.00094)
float(2.0000000000003E-6)
- Output for 4.4.3
- float(0.001038)
float(4.0000000000001E-6)
- Output for 4.4.2
- float(0.000963)
float(4.9999999999998E-6)
- Output for 4.4.1
- float(0.000974)
float(3.0E-6)
- Output for 4.4.0
- float(0.000902)
float(3.0E-6)
- Output for 4.3.11
- float(0.001079)
float(3.0E-6)
- Output for 4.3.10
- float(0.001011)
float(3.0E-6)
- Output for 4.3.9
- float(0.001098)
float(4.9999999999998E-6)
- Output for 4.3.8
- float(0.000886)
float(7.0000000000001E-6)
- Output for 4.3.7
- float(0.001051)
float(5.0000000000002E-6)
- Output for 4.3.6
- float(0.000872)
float(3.9999999999997E-6)
- Output for 4.3.5
- float(0.000957)
float(5.9999999999999E-6)
- Output for 4.3.4
- float(0.00125)
float(4.0000000000001E-6)
- Output for 4.3.3
- float(0.000911)
float(4.0000000000001E-6)
- Output for 4.3.2
- float(0.000928)
float(5.9999999999999E-6)
- Output for 4.3.1
- float(0.000919)
float(5.9999999999999E-6)
- Output for 4.3.0
- float(0.000965)
float(5.9999999999999E-6)
preferences:
181.94 ms | 401 KiB | 258 Q