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@ 2019-05-31T04:54:30Z

<?php

for( $errors_count = 1; $errors_count < 5; $errors_count++ ) {
    echo 'Current code:'.PHP_EOL;
    var_dump( 'unknown_upgrade_error_' . $errors_count + 1 );
    
    echo PHP_EOL.'Fixed code:'.PHP_EOL;
    var_dump( 'unknown_upgrade_error_' . ( $errors_count + 1 ) );
}

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

31.08 ms | 404 KiB | 5 Q