Check for conflicting imported classes with local classes
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1 | <?php |
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2 | |||
3 | namespace PragmaRX\Health\Checkers; |
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4 | |||
5 | use DomainException; |
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6 | use Carbon\CarbonInterval; |
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7 | use PragmaRX\Health\Support\Result; |
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8 | use PragmaRX\Health\Support\Traits\Database; |
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9 | |||
10 | View Code Duplication | class ServerUptime extends Base |
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11 | { |
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12 | use Database; |
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13 | |||
14 | /** |
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15 | * Check resource. |
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16 | * |
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17 | * @return Result |
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18 | */ |
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19 | public function check() |
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20 | { |
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21 | $this->loadDatabase(); |
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22 | |||
23 | $current = $this->getCurrentUptime(); |
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24 | |||
25 | $this->persist($current); |
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26 | |||
27 | $rebooted = |
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28 | ($cs = $this->uptimeInSeconds($current)) < |
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29 | ($ss = $this->uptimeInSeconds($this->database)); |
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30 | |||
31 | return $this->makeResult( |
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32 | !$rebooted, |
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33 | $this->makeMessage($current, $this->database) |
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34 | ); |
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35 | } |
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36 | |||
37 | /** |
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38 | * Execute command to get an uptime string. |
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39 | * |
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40 | * @return mixed|string |
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41 | * @throws Exception |
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42 | */ |
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43 | private function executeUptimeCommand() |
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44 | { |
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45 | $error = exec($this->target->command, $system_string, $output); |
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46 | |||
47 | if ($output !== 0) { |
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48 | throw new DomainException((string) $error); |
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49 | } |
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50 | |||
51 | return (!is_array($system_string) || empty($system_string)) |
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52 | ? '' |
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53 | : $system_string[0]; |
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54 | } |
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55 | |||
56 | /** |
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57 | * Get current uptime. |
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58 | * |
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59 | * @return array |
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60 | * @throws Exception |
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61 | */ |
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62 | protected function getCurrentUptime() |
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63 | { |
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64 | return $this->parseUptimeString($this->executeUptimeCommand()); |
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65 | } |
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66 | |||
67 | /** |
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68 | * Normalize uptime matches. |
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69 | * |
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70 | * @param $matches |
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71 | * @return \Illuminate\Support\Collection |
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72 | */ |
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73 | protected function normalizeMatches($matches) |
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74 | { |
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75 | return collect($matches) |
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76 | ->filter(function ($item, $key) { |
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77 | return !is_numeric($key); |
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78 | }) |
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79 | ->map(function ($item, $key) { |
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80 | $return = $item[0]; |
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81 | |||
82 | if (starts_with($key, 'load')) { |
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83 | $return = floatval($return); |
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84 | } elseif (is_numeric($return)) { |
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85 | $return = (int) $return; |
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86 | } elseif (empty($return)) { |
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87 | $return = null; |
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88 | } |
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89 | |||
90 | return $return; |
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91 | }) |
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92 | ->toArray(); |
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93 | } |
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94 | |||
95 | /** |
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96 | * Parse the uptime string. |
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97 | * |
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98 | * @param $system_string |
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99 | * @return array |
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100 | */ |
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101 | protected function parseUptimeString($system_string) |
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102 | { |
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103 | $matches = []; |
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104 | |||
105 | preg_match( |
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106 | $this->target->regex, |
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107 | $system_string, |
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108 | $matches, |
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109 | PREG_OFFSET_CAPTURE |
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110 | ); |
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111 | |||
112 | $matches = $this->normalizeMatches($matches); |
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113 | |||
114 | $matches['uptime_string'] = $system_string; |
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115 | |||
116 | return $matches; |
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117 | } |
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118 | |||
119 | /** |
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120 | * Convert uptime to seconds. |
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121 | * |
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122 | * @param $date |
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123 | * @return int |
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124 | */ |
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125 | protected function uptimeInSeconds($date) |
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126 | { |
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127 | return ( |
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128 | (isset($date['up_days']) ? $date['up_days'] * 24 * 60 : 0) + |
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129 | (isset($date['up_hours']) ? $date['up_hours'] * 60 : 0) + |
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130 | (isset($date['up_minutes']) ? $date['up_minutes'] : 0) |
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131 | ); |
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132 | } |
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133 | |||
134 | /** |
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135 | * Make uptime message. |
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136 | * |
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137 | * @param $current |
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138 | * @param $saved |
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139 | * @return string |
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140 | */ |
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141 | protected function makeMessage($current, $saved = null) |
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142 | { |
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143 | $current = $this->toUptimeString($current); |
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144 | |||
145 | $saved = $this->toUptimeString($saved); |
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146 | |||
147 | return sprintf($this->target->getErrorMessage(), $current, $saved); |
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148 | } |
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149 | |||
150 | /** |
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151 | * Convert uptime to human readable string. |
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152 | * |
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153 | * @param $uptime |
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154 | * @return string |
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155 | */ |
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156 | public function toUptimeString($uptime) |
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157 | { |
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158 | return (string) CarbonInterval::days( |
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159 | isset($uptime['up_days']) ? $uptime['up_days'] : 0 |
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160 | ) |
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161 | ->hours(isset($uptime['up_hours']) ? $uptime['up_hours'] : 0) |
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162 | ->minutes(isset($uptime['up_minutes']) ? $uptime['up_minutes'] : 0); |
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163 | } |
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164 | } |
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165 |
Let’s assume that you have a directory layout like this:
and let’s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: