php5.4 quoted times wrong problem analysis, php5.4 quoted times wrong _php tutorial

php5.4 quoted times wrong problem analysis, php5.4 quoted times wrong

In this paper, the author analyzes the php5.4 of quoted times. Share to everyone for your reference, as follows:

php5.3 Series version and previous version, reference no problem, after upgrading to php5.4, the place of reference, full error

Fatal error:call-time pass-by-reference have been removed in F:\work\wamp\www\test\test.php on line 6. take a look at the following example.

Example 1, recursive reference, PHP 5.3 and version, test results

<?phpfunction Test ($aa,& $bb) {  if ($aa < $BB) {    echo $bb. "
";    $BB--;    Test ($aa,& $bb);}  } $AA = 3; $bb = 6;test ($aa,& $bb);? >

The operation results are as follows

6
5
4

PHP 5.4 is not going to work, I was tested with PHP 5.4.11. Reported Fatal error:call-time pass-by-reference have been removed in F:\work\wamp\www\test\test.phpon line 6.

Example 2,php5.4.11 above test, only test pass reference

<?phpfunction Test ($aa,& $bb) {  if ($aa < $BB) {    $bb--;    echo $BB. "
";    Test ($aa,& $bb);}  } $AA = 3; $bb = 6;test ($aa, $BB); php5.4,php5.3 and previous versions, the input result is 5//test ($aa,& $bb); php5.3 input results are 5,php5.4 and later, error fatal Error:call-time pass-by-reference ....?>

After php5.4, the definition can have &, when the call with & will be error. This call feels strange.

Example 3,php5.4 and recursive reference

<?phpfunction Test ($aa,& $bb) {  if ($aa < $BB) {    $bb--;    echo $BB. "
";    Test ($AA, $BB);}  } $AA = 3; $bb = 6;test ($aa, $BB);? >

php5.2,php5.3,php5.4 can be run, running results:

5
4
3

Feel this 5.3 liters to 5.4 a little pit dad, if do not know change, upgrade is very depressed.

Read more about PHP error and exception related content readers can view this site topic: "PHP error and Exception handling method Summary"

I hope this article is helpful to you in PHP programming.

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