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<?php var_dump( array( '10' => '' ) ); if ( array( '10' => '' ) === array( 10 => '' ) ) { echo "strictly equal!"; }
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.32, 8.4.1 - 8.4.23, 8.5.0 - 8.5.8
array(1) { [10]=> string(0) "" } strictly equal!
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65 ms | 1028 KiB | 4 Q