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<?php $a = array(); $a[] = &$a; var_dump($a); $a[0] = 1; var_dump($a); echo "-------------------\n"; $a = array(); $a[] = &$a; //$b = unserialize(serialize($a)); $b =& $a; var_dump($b); $b[0] = 1; var_dump($b);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(1) { [0]=> *RECURSION* } int(1) ------------------- array(1) { [0]=> *RECURSION* } int(1)
Output for 5.6.28, 7.0.14, 7.1.0, 7.2.29 - 7.2.33, 7.3.16 - 7.3.33, 7.4.3 - 7.4.33
array(1) { [0]=> &array(1) { [0]=> *RECURSION* } } int(1) ------------------- array(1) { [0]=> &array(1) { [0]=> *RECURSION* } } int(1)
preferences:
134.43 ms | 403 KiB | 143 Q