3v4l.org

run code in 300+ PHP versions simultaneously
<?php $name="why";//声明变量$name,并初始化 function echoName1() { //在函数echoName1()里使用global来声明$name global $name; echo "the first name is ".$name."<br>"; } function echoName2() { //在函数echoName2()里没有使用global来声明$name echo "the second name is ".$name."<br>"; } echoName1(); echoName2(); $last_name = "O'Keefe"; echo $sql = "select * from users where last_name = '" . addslashes($last_name) . "'"; class Person { //下面是人的成员属性 var $name; //人的名子 var $sex; //人的性别 var $age; //人的年龄 //定义一个构造方法参数为属性姓名$name、性别$sex和年龄$age进行赋值 function __construct($name = "", $sex = "", $age = "") { $this->name = $name; $this->sex = $sex; $this->age = $age; } //这个人可以说话的方法, 说出自己的属性 function say() { echo "我的名子叫:" . $this->name . " 性别:" . $this->sex . " 我的年龄是:" . $this->age . "<br>"; } } $p1 = new Person("张三", "男", 20); $p1_string = serialize($p1); //把一个对象串行化,返一个字符串 echo $p1_string . "<br>"; //串行化的字符串我们通常不去解析 $area_json_array=[[1,2],[3,4]]; echo json_encode($area_json_array, TRUE);

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)
8.3.60.0040.01116.75
8.3.50.0070.01217.51
8.3.40.0150.00018.79
8.3.30.0070.00718.88
8.3.20.0080.00018.91
8.3.10.0090.00020.32
8.3.00.0070.00319.51
8.2.180.0040.01216.88
8.2.170.0070.00722.96
8.2.160.0070.00721.20
8.2.150.0070.00024.18
8.2.140.0040.00424.66
8.2.130.0090.00026.16
8.2.120.0080.00019.48
8.2.110.0060.00319.33
8.2.100.0090.00317.84
8.2.90.0000.00819.22
8.2.80.0030.00617.97
8.2.70.0000.00917.50
8.2.60.0040.00417.91
8.2.50.0090.00018.10
8.2.40.0070.00018.16
8.2.30.0060.00317.95
8.2.20.0000.00817.73
8.2.10.0020.00517.70
8.2.00.0000.00717.71
8.1.280.0070.00725.92
8.1.270.0080.00024.66
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0100.00022.74
8.1.230.0080.00317.82
8.1.220.0080.00017.91
8.1.210.0040.00418.77
8.1.200.0040.00417.35
8.1.190.0000.00817.36
8.1.180.0000.00918.10
8.1.170.0050.00318.91
8.1.160.0000.00718.90
8.1.150.0040.00418.63
8.1.140.0070.00017.51
8.1.130.0050.00317.86
8.1.120.0000.00817.50
8.1.110.0040.00417.42
8.1.100.0000.00717.50
8.1.90.0070.00017.50
8.1.80.0040.00417.48
8.1.70.0070.00017.36
8.1.60.0030.00517.62
8.1.50.0050.00217.53
8.1.40.0000.00817.55
8.1.30.0060.00317.57
8.1.20.0040.00417.63
8.1.10.0030.00617.48
8.1.00.0000.00717.53
8.0.300.0090.00020.80
8.0.290.0050.00316.75
8.0.280.0000.00718.39
8.0.270.0070.00017.27
8.0.260.0030.00316.91
8.0.250.0080.00017.04
8.0.240.0040.00416.91
8.0.230.0070.00017.04
8.0.220.0070.00016.96
8.0.210.0000.00716.88
8.0.200.0070.00016.94
8.0.190.0000.00716.98
8.0.180.0000.00716.91
8.0.170.0040.00416.98
8.0.160.0070.00017.04
8.0.150.0040.00416.83
8.0.140.0000.01016.90
8.0.130.0050.00013.36
8.0.120.0040.00416.93
8.0.110.0040.00416.88
8.0.100.0050.00216.95
8.0.90.0070.00016.98
8.0.80.0030.01316.92
8.0.70.0070.00016.86
8.0.60.0040.00416.95
8.0.50.0000.00716.82
8.0.30.0120.00917.09
8.0.20.0090.00917.28
8.0.10.0040.00416.88
8.0.00.0170.00416.71
7.4.330.0050.00012.84
7.4.320.0060.00316.47
7.4.300.0060.00016.57
7.4.290.0000.00716.43
7.4.280.0060.00316.63
7.4.270.0030.00316.55
7.4.260.0060.00013.28
7.4.250.0040.00416.61
7.4.240.0050.00316.63
7.4.230.0030.00316.42
7.4.220.0170.00616.51
7.4.210.0060.00816.50
7.4.200.0040.00416.40
7.4.190.0000.00716.56
7.4.160.0060.00916.59
7.4.150.0150.00316.78
7.4.140.0100.01416.55
7.4.130.0050.01216.49
7.4.120.0060.01216.62
7.4.110.0070.01016.51
7.4.100.0070.01016.57
7.4.90.0130.00616.49
7.4.80.0100.01319.39
7.4.70.0120.00616.55
7.4.60.0100.00716.57
7.4.50.0090.00016.46
7.4.40.0060.00916.60
7.4.30.0120.00916.67
7.4.00.0070.01015.13
7.3.330.0060.00013.38
7.3.320.0000.00513.38
7.3.310.0000.00816.27
7.3.300.0080.00016.43
7.3.290.0060.01316.39
7.3.280.0080.01016.37
7.3.270.0040.01516.46
7.3.260.0100.00716.37
7.3.250.0070.01416.52
7.3.240.0200.00016.52
7.3.230.0030.01416.51
7.3.210.0070.01016.46
7.3.200.0050.01116.41
7.3.190.0110.01116.46
7.3.180.0090.01116.59
7.3.170.0230.00316.36
7.3.160.0160.00316.60
7.3.120.0160.00014.85
7.3.110.0070.01014.59
7.3.100.0000.01414.84
7.3.90.0110.00715.05
7.3.80.0060.00615.00
7.3.70.0040.00714.86
7.3.60.0070.00714.94
7.3.50.0070.00714.89
7.3.40.0050.00514.73
7.3.30.0040.00414.79
7.3.20.0080.00416.55
7.3.10.0040.00716.68
7.3.00.0030.01016.70
7.2.330.0140.00416.58
7.2.320.0150.00916.70
7.2.310.0140.01116.88
7.2.300.0030.01316.42
7.2.290.0110.00716.63
7.2.240.0070.01014.91
7.2.230.0030.01014.89
7.2.220.0110.00715.20
7.2.210.0080.00515.04
7.2.200.0060.00615.18
7.2.190.0070.00314.80
7.2.180.0070.00714.82
7.2.170.0030.00714.87
7.2.160.0080.00015.07
7.2.150.0100.00716.70
7.2.140.0000.01617.00
7.2.130.0030.01016.96
7.2.120.0070.00716.73
7.2.110.0030.01417.01
7.2.100.0060.00716.63
7.2.90.0090.00016.98
7.2.80.0060.00316.69
7.2.70.0110.00417.02
7.2.60.0110.00016.80
7.2.50.0000.01216.56
7.2.40.0040.00816.83
7.2.30.0040.00716.99
7.2.20.0030.01016.97
7.2.10.0090.00916.94
7.2.00.0070.00918.32
7.1.330.0100.00315.85
7.1.320.0050.00515.91
7.1.310.0090.00615.51
7.1.300.0040.00815.80
7.1.290.0070.00715.79
7.1.280.0070.00715.60
7.1.270.0000.01015.80
7.1.260.0030.00716.06
7.1.250.0060.00616.03
7.1.200.0070.00715.78
7.1.100.0040.01218.13
7.1.70.0030.00817.10
7.1.60.0130.01019.40
7.1.50.0100.00717.02
7.1.00.0030.07322.48
7.0.200.0370.00314.72
7.0.140.0070.07022.21
7.0.120.0100.06722.02
7.0.90.0500.05319.95
7.0.80.0700.06320.04
7.0.70.0570.08319.82
7.0.60.0570.07319.80
7.0.50.0730.05320.32
7.0.40.0070.05320.10
7.0.30.0030.06320.19
7.0.20.0070.08020.04
7.0.10.0100.04720.16
7.0.00.0100.08020.18
5.6.280.0030.07320.84
5.6.240.0070.06020.65
5.6.230.0100.08320.64
5.6.220.0130.04020.50
5.6.210.0170.07320.59
5.6.200.0100.08320.95
5.6.190.0070.07721.00
5.6.180.0000.05020.96
5.6.170.0100.08721.04
5.6.160.0100.08021.13
5.6.150.0070.06021.12
5.6.140.0100.05721.13
5.6.130.0100.04721.05
5.6.120.0030.07721.11
5.6.110.0030.08320.89
5.6.100.0070.05021.04
5.6.90.0100.05320.94
5.6.80.0030.07320.48
5.6.70.0030.05320.49
5.6.60.0130.07320.42
5.6.50.0100.07020.43
5.6.40.0070.07720.30
5.6.30.0100.07320.33
5.6.20.0100.06720.39
5.6.10.0070.05320.47
5.6.00.0100.07320.43
5.5.380.0100.05020.39
5.5.370.0030.07320.41
5.5.360.0130.06720.35
5.5.350.0100.06020.46
5.5.340.0100.08320.85
5.5.330.0170.07020.89
5.5.320.0100.08020.65
5.5.310.0070.08320.91
5.5.300.0130.08020.77
5.5.290.0030.05320.90
5.5.280.0030.04320.90
5.5.270.0100.08320.89
5.5.260.0100.08020.93
5.5.250.0100.07720.55
5.5.240.0100.06320.25
5.5.230.0100.07320.17
5.5.220.0070.08720.26
5.5.210.0070.06020.23
5.5.200.0100.08020.08
5.5.190.0170.08320.16
5.5.180.0070.08320.29
5.5.160.0000.09020.29
5.5.150.0030.05720.25
5.5.140.0070.04020.23
5.5.130.0070.04720.29
5.5.120.0070.04320.13
5.5.110.0130.04020.18
5.5.100.0100.05320.07
5.5.90.0100.04020.08
5.5.80.0130.04320.12
5.5.70.0030.07320.07
5.5.60.0100.07720.04
5.5.50.0130.05320.10
5.5.40.0130.07020.13
5.5.30.0070.06020.09
5.5.20.0100.07020.15
5.5.10.0130.06020.02
5.5.00.0070.07320.05
5.4.450.0070.08319.51
5.4.440.0070.04019.42
5.4.430.0070.05019.45
5.4.420.0070.04319.36
5.4.410.0100.05319.38
5.4.400.0070.05719.23
5.4.390.0070.07719.18
5.4.380.0000.05718.91
5.4.370.0030.08019.14
5.4.360.0070.05018.91
5.4.350.0170.05319.18
5.4.340.0130.07319.09
5.4.320.0130.06719.14
5.4.310.0130.07319.03
5.4.300.0130.06719.14
5.4.290.0000.05319.02
5.4.280.0100.03719.04
5.4.270.0170.03019.12
5.4.260.0130.07319.04
5.4.250.0130.06319.05
5.4.240.0100.06719.20
5.4.230.0030.06719.13
5.4.220.0100.06319.22
5.4.210.0070.07719.12
5.4.200.0030.05318.93
5.4.190.0130.06318.90
5.4.180.0100.07719.04
5.4.170.0070.04319.20
5.4.160.0170.05019.01
5.4.150.0100.06018.88
5.4.140.0100.07016.44
5.4.130.0170.03316.41
5.4.120.0070.05016.41
5.4.110.0170.06716.52
5.4.100.0070.05316.40
5.4.90.0070.07016.48
5.4.80.0100.07316.36
5.4.70.0170.06716.45
5.4.60.0130.07016.37
5.4.50.0070.07016.46
5.4.40.0130.06716.35
5.4.30.0100.03316.41
5.4.20.0070.05316.44
5.4.10.0100.05716.31
5.4.00.0070.07015.81
5.3.290.0070.04314.69
5.3.280.0070.07314.66
5.3.270.0000.06714.72
5.3.260.0000.08014.62
5.3.250.0100.05314.66
5.3.240.0170.05714.59
5.3.230.0000.04714.66
5.3.220.0100.06014.59
5.3.210.0170.06014.62
5.3.200.0030.06014.71
5.3.190.0070.07714.56
5.3.180.0100.07314.54
5.3.170.0070.04714.50
5.3.160.0070.07014.55
5.3.150.0100.07314.55
5.3.140.0130.05714.57
5.3.130.0100.06714.53
5.3.120.0000.08014.54
5.3.110.0170.06314.69
5.3.100.0100.07314.10
5.3.90.0070.07314.15
5.3.80.0000.05714.05
5.3.70.0070.06314.09
5.3.60.0030.06314.06
5.3.50.0170.06314.07
5.3.40.0030.08013.85
5.3.30.0070.07313.94
5.3.20.0030.07313.75
5.3.10.0130.04313.79
5.3.00.0030.06013.71
5.2.170.0030.06311.18
5.2.160.0170.04311.26
5.2.150.0070.06011.14
5.2.140.0030.04711.26
5.2.130.0100.06011.14
5.2.120.0030.04311.16
5.2.110.0130.05710.97
5.2.100.0000.03710.97
5.2.90.0030.06011.22
5.2.80.0070.03311.15
5.2.70.0030.04011.05
5.2.60.0100.02310.97
5.2.50.0070.06711.12
5.2.40.0000.06711.09
5.2.30.0030.04310.84
5.2.20.0100.05310.89
5.2.10.0000.05010.77
5.2.00.0070.04010.76
5.1.60.0070.05010.01
5.1.50.0070.04010.07
5.1.40.0030.05310.06
5.1.30.0000.05710.26
5.1.20.0030.06010.31
5.1.10.0070.0379.92
5.1.00.0100.04710.11
5.0.50.0000.0508.64
5.0.40.0030.0438.47
5.0.30.0070.0338.32
5.0.20.0000.0478.20
5.0.10.0030.0438.18
5.0.00.0000.0638.16
4.4.90.0030.0337.27
4.4.80.0000.0377.27
4.4.70.0030.0377.27
4.4.60.0030.0337.27
4.4.50.0030.0377.27
4.4.40.0030.0537.27
4.4.30.0070.0277.27
4.4.20.0100.0277.27
4.4.10.0100.0307.27
4.4.00.0000.0577.27
4.3.110.0070.0307.27
4.3.100.0000.0207.27
4.3.90.0030.0337.27
4.3.80.0000.0577.27
4.3.70.0000.0377.27
4.3.60.0030.0337.27
4.3.50.0030.0377.27
4.3.40.0030.0307.27
4.3.30.0030.0337.27
4.3.20.0000.0377.27
4.3.10.0000.0307.27
4.3.00.0000.0377.27

preferences:
52.44 ms | 401 KiB | 5 Q