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Usage example of substr string interception function in php

WBOYOriginal: 2016-07-25 08:58:461307browse

//by bbs.it-home.org
$rest = substr("abcdef", 1); // returns "bcdef"
echo 'substr("abcdef", 1) returns ' . $rest . "
";
$rest = substr("abcdef", 1, 3); // returns "bcd"
echo 'substr("abcdef", 1, 3) returns ' . $rest . "
";
$rest = substr("abcdef", -1); // returns "f"
echo 'substr("abcdef", -1) returns ' . $rest . "
";
$rest = substr("abcdef", -2); // returns "ef"
echo 'substr("abcdef", -2) returns ' . $rest . "
";
$rest = substr("abcdef", -3, 1); // returns "d"
echo 'substr("abcdef", -3, 1) returns ' . $rest . "
";
$rest = substr("abcdef", 1, -1); // returns "bcde"
echo 'substr("abcdef", 1, -1) returns ' . $rest . "
";
?>

复制代码

更多内容，请参考php手册中的function.substr.html。

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