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@ 2019-05-19T11:04:59Z

<?php

$x = 'yo';
for( $i = 0; $i <= 3; $i++ ) {
    echo "substr( '$x', $i ) is: ", var_export(substr( $x, $i ),true), "\n";
}

echo "\n\n";

$x = '';
echo "substr( '$x', 0 ) is: ", var_export(substr( $x, 0 ),true), "\n";
echo "substr( '$x', 1 ) is: ", var_export(substr( $x, 1 ),true), "\n";

Output
Performance
VLD
References
Branches

substr: documentation ( source)
var_export: documentation ( source)

preferences:dark modelive preview

58.67 ms | 402 KiB | 5 Q