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<?php $a = [1,2,3]; $b = &$a; foreach($a as $v) {echo "$v-"; unset($a[1]); echo "$v\n";} var_dump($a); ?>
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
1-1 2-2 3-3 array(2) { [0]=> int(1) [2]=> int(3) }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 1-1 2-2 3-3 array(2) { [0]=> int(1) [2]=> int(3) }
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
1-1 3-3 array(2) { [0]=> int(1) [2]=> int(3) }

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