3v4l.org

run code in 300+ PHP versions simultaneously
<?php function cn_substrr($str,$slen,$startdd=0) { $str = cn_substr(stripslashes($str),$slen,$startdd); return addslashes($str); } function cn_substr($str,$slen,$startdd=0) { global $cfg_soft_lang; if($cfg_soft_lang=='utf-8') { return cn_substr_utf8($str,$slen,$startdd); } $restr = ''; $c = ''; $str_len = strlen($str); if($str_len < $startdd+1) { return ''; } if($str_len < $startdd + $slen || $slen==0) { $slen = $str_len - $startdd; } $enddd = $startdd + $slen - 1; for($i=0;$i<$str_len;$i++) { if($startdd==0) { $restr .= $c; } else if($i > $startdd) { $restr .= $c; } if(ord($str[$i])>0x80) { if($str_len>$i+1) { $c = $str[$i].$str[$i+1]; } $i++; } else { $c = $str[$i]; } if($i >= $enddd) { if(strlen($restr)+strlen($c)>$slen) { break; } else { $restr .= $c; break; } } } return $restr; } $a = '测试这是一个测试'; //$a = 'xxxxbbbbbnnn'; $b = cn_substrr($a,5,0); var_dump($b); ?>

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)
8.3.60.0140.00018.55
8.3.50.0080.01021.27
8.3.40.0060.00918.84
8.3.30.0090.00919.21
8.3.20.0070.00020.34
8.3.10.0040.00422.17
8.3.00.0080.00022.44
8.2.180.0090.00616.75
8.2.170.0110.00422.96
8.2.160.0030.01020.52
8.2.150.0000.00824.18
8.2.140.0000.00824.66
8.2.130.0030.00626.16
8.2.120.0080.00019.66
8.2.110.0060.00322.14
8.2.100.0110.00019.34
8.2.90.0040.00419.36
8.2.80.0000.00817.97
8.2.70.0030.00617.62
8.2.60.0050.00518.03
8.2.50.0000.00818.07
8.2.40.0000.00818.16
8.2.30.0060.00318.06
8.2.20.0030.00617.75
8.2.10.0040.00417.78
8.2.00.0000.00817.77
8.1.280.0130.00725.92
8.1.270.0040.00420.45
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0060.00318.87
8.1.230.0110.00019.00
8.1.220.0030.00617.79
8.1.210.0000.00818.77
8.1.200.0090.00017.35
8.1.190.0040.00417.42
8.1.180.0040.00418.72
8.1.170.0000.01018.50
8.1.160.0070.00022.08
8.1.150.0030.00618.64
8.1.140.0000.00717.46
8.1.130.0000.00717.75
8.1.120.0040.00417.55
8.1.110.0030.00317.34
8.1.100.0070.00017.49
8.1.90.0000.00717.31
8.1.80.0030.00517.50
8.1.70.0040.00417.41
8.1.60.0080.00017.49
8.1.50.0000.00817.52
8.1.40.0040.00417.43
8.1.30.0030.00517.52
8.1.20.0040.00417.63
8.1.10.0040.00417.56
8.1.00.0070.00317.50
8.0.300.0070.00018.77
8.0.290.0020.00517.05
8.0.280.0030.00318.38
8.0.270.0030.00317.28
8.0.260.0000.00716.86
8.0.250.0030.00316.98
8.0.240.0050.00317.01
8.0.230.0030.00316.91
8.0.220.0070.00016.90
8.0.210.0000.00816.88
8.0.200.0040.00416.96
8.0.190.0040.00416.95
8.0.180.0040.00416.84
8.0.170.0050.00316.88
8.0.160.0030.00617.01
8.0.150.0000.00716.84
8.0.140.0030.00616.80
8.0.130.0000.00613.39
8.0.120.0040.00416.86
8.0.110.0070.00016.89
8.0.100.0050.00316.78
8.0.90.0080.00016.72
8.0.80.0110.00616.96
8.0.70.0040.00416.96
8.0.60.0040.00416.79
8.0.50.0050.00216.78
8.0.30.0080.01117.36
8.0.20.0100.00817.41
8.0.10.0040.00417.01
8.0.00.0140.00416.96
7.4.330.0030.00315.00
7.4.320.0040.00416.54
7.4.300.0000.00616.66
7.4.290.0040.00416.53
7.4.280.0050.00316.52
7.4.270.0030.00616.66
7.4.260.0030.00316.45
7.4.250.0050.00216.47
7.4.240.0060.00116.55
7.4.230.0030.00316.27
7.4.220.0100.00716.69
7.4.210.0080.00616.56
7.4.200.0030.00516.72
7.4.190.0000.00716.70
7.4.160.0070.01016.35
7.4.150.0120.00617.40
7.4.140.0110.01017.86
7.4.130.0110.00716.51
7.4.120.0070.01016.52
7.4.110.0100.00716.52
7.4.100.0190.00416.33
7.4.90.0030.01416.35
7.4.80.0040.01819.39
7.4.70.0090.00916.30
7.4.60.0100.00616.55
7.4.50.0000.00416.41
7.4.40.0090.00622.77
7.4.30.0000.02416.46
7.4.00.0030.00614.67
7.3.330.0000.00513.40
7.3.320.0000.00513.35
7.3.310.0040.00416.37
7.3.300.0030.00316.39
7.3.290.0080.00616.43
7.3.280.0070.00816.38
7.3.270.0070.01017.40
7.3.260.0110.01116.29
7.3.250.0080.00916.37
7.3.240.0030.01516.52
7.3.230.0110.00716.58
7.3.210.0140.00416.36
7.3.200.0100.01019.39
7.3.190.0120.00616.39
7.3.180.0140.00316.38
7.3.170.0070.01016.43
7.3.160.0120.01216.30
7.3.120.0070.00714.92
7.3.10.0030.01316.26
7.3.00.0140.00316.44
7.2.330.0060.01216.79
7.2.320.0210.00316.93
7.2.310.0070.01016.52
7.2.300.0070.01016.85
7.2.290.0120.00316.75
7.2.130.0130.00316.49
7.2.120.0060.00916.68
7.2.110.0030.01416.74
7.2.100.0070.00716.63
7.2.90.0110.00716.72
7.2.80.0110.00516.25
7.2.70.0110.00816.82
7.2.60.0110.00716.77
7.2.50.0040.01116.59
7.2.40.0090.00616.79
7.2.30.0070.01116.89
7.2.20.0000.01116.80
7.2.10.0070.01016.64
7.2.00.0030.01118.25
7.1.250.0060.00915.52
7.1.100.0100.00317.96
7.1.70.0000.00717.09
7.1.60.0070.01019.82
7.1.50.0100.01616.86
7.1.00.0030.03322.46
7.0.200.0000.00816.47
7.0.140.0070.07022.09
7.0.110.0200.04319.92
7.0.100.0100.04020.10
7.0.90.0000.04719.95
7.0.80.0530.04719.97
7.0.70.0100.03720.02
7.0.60.0030.07719.90
7.0.50.0100.03319.99
7.0.40.0030.04319.73
7.0.30.0000.04319.86
7.0.20.0000.04319.81
7.0.10.0030.04019.73
7.0.00.0030.04019.77
5.6.280.0000.07720.79
5.6.260.0070.05320.76
5.6.250.0000.05020.63
5.6.240.0070.04020.56
5.6.230.0000.05020.48
5.6.220.0070.04020.68
5.6.210.0070.04020.61
5.6.200.0000.04320.57
5.6.190.0070.03720.65
5.6.180.0170.06320.87
5.6.170.0000.04320.70
5.6.160.0100.03720.47
5.6.150.0030.04320.60
5.6.140.0100.04020.64
5.6.130.0100.03320.86
5.6.120.0070.05720.62
5.6.110.0100.03720.62
5.6.100.0000.04320.64
5.6.90.0000.05020.64
5.6.80.0170.06020.04
5.6.70.0070.03320.02
5.6.60.0030.05019.93
5.6.50.0030.07720.25
5.6.40.0000.06020.06
5.6.30.0070.08319.93
5.6.20.0100.08020.07
5.6.10.0100.07019.99
5.6.00.0070.07719.93
5.5.380.0070.03720.53
5.5.370.0030.03720.30
5.5.360.0030.06720.29
5.5.350.0100.05320.44
5.5.340.0030.03720.80
5.5.330.0070.05020.91
5.5.320.0070.04020.96
5.5.310.0070.04720.82
5.5.300.0000.04320.89
5.5.290.0030.04020.79
5.5.280.0070.04020.85
5.5.270.0000.04320.84
5.5.260.0070.06320.84
5.5.250.0070.03320.70
5.5.240.0030.04320.20
5.5.230.0000.04320.13
5.5.220.0100.05020.32
5.5.210.0030.04320.17
5.5.200.0100.07320.33
5.5.190.0030.07320.27
5.5.180.0100.07720.17
5.5.160.0100.06720.33
5.5.150.0100.07320.06
5.5.140.0070.04720.22
5.5.130.0170.07320.10
5.5.120.0130.06320.13
5.5.110.0070.05720.39
5.5.100.0100.07720.00
5.5.90.0030.07720.25
5.5.80.0170.07320.11
5.5.70.0130.06720.02
5.5.60.0000.09020.16
5.5.50.0130.07020.08
5.5.40.0070.07320.14
5.5.30.0170.06320.13
5.5.20.0070.06720.10
5.5.10.0030.07020.24
5.5.00.0030.08020.02
5.4.450.0000.04319.44
5.4.440.0000.04019.35
5.4.430.0030.04319.33
5.4.420.0030.04319.50
5.4.410.0070.03319.51
5.4.400.0030.03319.01
5.4.390.0030.03719.17
5.4.380.0000.04019.00
5.4.370.0030.08019.31
5.4.360.0170.06319.01
5.4.350.0070.04319.00
5.4.340.0170.06719.31
5.4.320.0070.07019.02
5.4.310.0100.07319.34
5.4.300.0030.07719.33
5.4.290.0100.04319.31
5.4.280.0070.08019.05
5.4.270.0130.06719.33
5.4.260.0070.08018.99
5.4.250.0100.07719.00
5.4.240.0130.06719.11
5.4.230.0170.06318.94
5.4.220.0070.07719.16
5.4.210.0170.06319.17
5.4.200.0100.07318.98
5.4.190.0100.06718.97
5.4.180.0070.08018.94
5.4.170.0070.07719.33
5.4.160.0070.04319.16
5.4.150.0130.06719.12
5.4.140.0070.07316.70
5.4.130.0170.06716.40
5.4.120.0070.07016.59
5.4.110.0030.07016.42
5.4.100.0030.07716.52
5.4.90.0000.06716.63
5.4.80.0100.04016.46
5.4.70.0030.07716.50
5.4.60.0100.05316.52
5.4.50.0030.08016.48
5.4.40.0030.07316.53
5.4.30.0070.06016.63
5.4.20.0070.07316.49
5.4.10.0000.08316.47
5.4.00.0030.07016.07
5.3.290.0030.07714.81
5.3.280.0030.07314.47
5.3.270.0100.04314.58
5.3.260.0100.07314.64
5.3.250.0130.07014.61
5.3.240.0100.07714.57
5.3.230.0100.06714.83
5.3.220.0130.07314.43
5.3.210.0100.06014.81
5.3.200.0070.05014.59
5.3.190.0030.07714.55
5.3.180.0230.06314.57
5.3.170.0070.08014.80
5.3.160.0100.07014.70
5.3.150.0030.08014.71
5.3.140.0100.07314.53
5.3.130.0030.08014.57
5.3.120.0100.07714.53
5.3.110.0030.08014.57
5.3.100.0130.07314.14
5.3.90.0100.06714.11
5.3.80.0070.07714.11
5.3.70.0030.07714.01
5.3.60.0000.04714.02
5.3.50.0100.06713.95
5.3.40.0070.07314.03
5.3.30.0070.07013.94
5.3.20.0030.07713.73
5.3.10.0100.06313.72
5.3.00.0000.07713.73
5.2.170.0070.04012.09
5.2.160.0070.05312.09
5.2.150.0030.06012.09
5.2.140.0130.02712.09
5.2.130.0030.06312.09
5.2.120.0070.06012.09
5.2.110.0070.06312.09
5.2.100.0030.06012.09
5.2.90.0030.06012.09
5.2.80.0030.06312.09
5.2.70.0030.07012.09
5.2.60.0070.03312.09
5.2.50.0030.05012.09
5.2.40.0130.05712.09
5.2.30.0000.06712.09
5.2.20.0070.05712.09
5.2.10.0030.06312.09
5.2.00.0100.05312.09
5.1.60.0030.05312.09
5.1.50.0070.05712.09
5.1.40.0030.05012.09
5.1.30.0000.05712.09
5.1.20.0000.06312.09
5.1.10.0070.05712.09
5.1.00.0070.04712.09
5.0.50.0030.04712.09
5.0.40.0030.04712.09
5.0.30.0070.06012.09
5.0.20.0030.04712.09
5.0.10.0100.03712.09
5.0.00.0130.04312.09
4.4.90.0000.03712.09
4.4.80.0030.03712.09
4.4.70.0030.03312.09
4.4.60.0000.03712.09
4.4.50.0000.02312.09
4.4.40.0030.05712.09
4.4.30.0100.02712.09
4.4.20.0000.03712.09
4.4.10.0030.03712.09
4.4.00.0000.05312.09
4.3.110.0000.03712.09
4.3.100.0000.03312.09
4.3.90.0070.03012.09
4.3.80.0000.05712.09
4.3.70.0030.03312.09
4.3.60.0030.03312.09
4.3.50.0000.03012.09
4.3.40.0000.05312.09
4.3.30.0030.03712.09
4.3.20.0000.02712.09
4.3.10.0030.01712.09
4.3.00.0000.03312.09

preferences:
39.9 ms | 401 KiB | 5 Q