<?php
function replaceStrAt($str, $substr, $from, $to = null){
is_null($to) and $to = $from;
return mb_substr($str, 0, $from) . $substr . mb_substr($str, $to + 1);
}
function insertSubstrInto($str, $substr, $index){
return mb_substr($str, 0, $index) . $substr . mb_substr($str, $index);
}
$s = 'И просто текст';
echo replaceStrAt($s, "\t", 4), "\n";
echo insertSubstrInto($s, "\t", 4), "\n";
- Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- И пр сто текст
И пр осто текст
preferences:
220.05 ms | 403 KiB | 296 Q