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<?php function bytesToSize($bytes, $precision = 2) { $symbols = array('B', 'Kb', 'Mb', 'Gb', 'Tb', 'Pb', 'Eb', 'Zb', 'Yb'); $exp = (int)floor(log($bytes) / log(1024)); return sprintf('%.'. $precision .'f '. $symbols[$exp], $bytes / pow(1024, floor($exp))); } function mem() { return bytesToSize(memory_get_usage(true)); } function test($msg, $test) { $t = microtime(true); $test($msg); echo $msg .': <b>'. sprintf('%.6f', microtime(true) - $t) .'</b>'. PHP_EOL; } $array = range(0, 300000); test('foreach', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .PHP_EOL; foreach ($array as $v) { $b = $v; } echo $msg . ' after loop mem: '. mem() .PHP_EOL; }); test('foreach ref', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .PHP_EOL; foreach ($array as &$v) { $b = $v; } unset($v); echo $msg . ' after loop mem: '. mem() .PHP_EOL; }); test('for', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .PHP_EOL; $so = count($array); for ($i = 0; $i < $so; ++$i) { $b = $array[$i]; } echo $msg . ' after loop mem: '. mem() .PHP_EOL; }); test('while each -> list', function ($msg) use ($array) { echo $msg . ' before loop mem: '. mem() .PHP_EOL; while (list($k, $v) = each($array)) { $b =$v; } echo $msg . ' after loop mem: '. mem() .PHP_EOL; }); echo 'Memory peak: ' . round(memory_get_peak_usage() / 1048576, 3) .PHP_EOL;
Output for 7.3.1
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.004428</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.036223</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004671</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.071564</b> Memory peak: 39.256
Output for 7.3.0
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.004254</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.045406</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004550</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.077054</b> Memory peak: 39.256
Output for 7.2.13
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.009187</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.057869</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.005233</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.070055</b> Memory peak: 39.253
Output for 7.2.12
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.005472</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.033422</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.006474</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.074870</b> Memory peak: 39.253
Output for 7.2.11
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.004196</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.040100</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004752</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.075762</b> Memory peak: 39.253
Output for 7.2.10
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.004909</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.047813</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.005322</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.084644</b> Memory peak: 39.253
Output for 7.2.9
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.007894</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.025569</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004871</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.067851</b> Memory peak: 39.253
Output for 7.2.8
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.006634</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.033922</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004791</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.072956</b> Memory peak: 39.253
Output for 7.2.7
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.004624</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.041451</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004826</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.078822</b> Memory peak: 39.253
Output for 7.2.6
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.004423</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.049157</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.005106</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.082298</b> Memory peak: 39.253
Output for 7.2.5
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.036345</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.039760</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004785</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.079285</b> Memory peak: 39.253
Output for 7.2.4
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.004780</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.044280</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.005279</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.068668</b> Memory peak: 39.253
Output for 7.2.3
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.004340</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.044664</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.005060</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.080003</b> Memory peak: 39.253
Output for 7.2.2
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.005618</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.040368</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.005075</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.082426</b> Memory peak: 39.253
Output for 7.2.1
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.006100</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.036458</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004665</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.071352</b> Memory peak: 39.253
Output for 7.2.0
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.004345</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.026725</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004584</b> while each -> list before loop mem: 24.00 Mb Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/DHFsg on line 46 while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.067090</b> Memory peak: 39.253
Output for 7.1.25
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.008508</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.018583</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.012342</b> while each -> list before loop mem: 24.00 Mb while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.083723</b> Memory peak: 39.218
Output for 7.1.7
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.005225</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.031061</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004668</b> while each -> list before loop mem: 24.00 Mb while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.066963</b> Memory peak: 39.218
Output for 7.1.6
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.006864</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.021849</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.007585</b> while each -> list before loop mem: 24.00 Mb while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.064391</b> Memory peak: 39.22
Output for 7.1.5
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.007025</b> foreach ref before loop mem: 18.00 Mb
Process exited with code 137.
Output for 7.1.0
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.004830</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.015929</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.006290</b> while each -> list before loop mem: 24.00 Mb while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.060960</b> Memory peak: 39.218
Output for 7.0.20
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.072221</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.239138</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004223</b> while each -> list before loop mem: 24.00 Mb while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.093459</b> Memory peak: 39.219
Output for 7.0.14
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.005197</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.015991</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.007370</b> while each -> list before loop mem: 24.00 Mb while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.071568</b> Memory peak: 39.219
Output for 7.0.6
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.004601</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.015244</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.005828</b> while each -> list before loop mem: 24.00 Mb while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.057000</b> Memory peak: 39.219
Output for 7.0.5
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.003222</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.012752</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004480</b> while each -> list before loop mem: 24.00 Mb while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.050305</b> Memory peak: 39.219
Output for 7.0.4
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.003959</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.014259</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.005112</b> while each -> list before loop mem: 24.00 Mb while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.052008</b> Memory peak: 39.219
Output for 7.0.3
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.003201</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.022157</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004443</b> while each -> list before loop mem: 24.00 Mb while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.059699</b> Memory peak: 39.219
Output for 7.0.2
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.003257</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.020583</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004461</b> while each -> list before loop mem: 24.00 Mb while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.057393</b> Memory peak: 39.219
Output for 7.0.1
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.003281</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.011288</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.004683</b> while each -> list before loop mem: 24.00 Mb while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.052512</b> Memory peak: 39.219
Output for 7.0.0
foreach before loop mem: 18.00 Mb foreach after loop mem: 18.00 Mb foreach: <b>0.004251</b> foreach ref before loop mem: 18.00 Mb foreach ref after loop mem: 40.01 Mb foreach ref: <b>0.014619</b> for before loop mem: 24.00 Mb for after loop mem: 24.00 Mb for: <b>0.005422</b> while each -> list before loop mem: 24.00 Mb while each -> list after loop mem: 40.01 Mb while each -> list: <b>0.055496</b> Memory peak: 39.219
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
foreach before loop mem: 43.50 Mb Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 72 bytes) in /in/DHFsg on line 23
Process exited with code 255.
Output for 5.3.0 - 5.3.29
foreach before loop mem: 44.00 Mb Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 71 bytes) in /in/DHFsg on line 23
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/DHFsg on line 21
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/DHFsg on line 21
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/DHFsg on line 21
Process exited with code 255.
preferences:
147.55 ms | 401 KiB | 191 Q