(PHP 4 >= 4.3.0, PHP 5, PHP 7)
mb_strtolower — 使锟街凤拷锟斤拷小写
$str
[, string $encoding = mb_internal_encoding()
] ) : string
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷母锟街凤拷转锟斤拷锟斤拷小写锟斤拷 str锟斤拷
str要锟斤拷小写锟斤拷锟街凤拷锟斤拷锟斤拷
encodingencoding
锟斤拷锟斤拷为锟街凤拷锟斤拷锟诫。锟斤拷锟绞★拷裕锟斤拷锟绞癸拷锟斤拷诓锟斤拷址锟斤拷锟斤拷搿�
锟斤拷锟斤拷锟斤拷母锟街凤拷锟窖憋拷转锟斤拷锟斤拷小写锟斤拷 str锟斤拷
锟斤拷锟斤拷锟斤拷锟� Unicode 锟斤拷锟皆碉拷锟斤拷息锟斤拷锟斤拷渭锟� » http://www.unicode.org/unicode/reports/tr21/锟斤拷
锟斤拷 strtolower() 锟斤拷同锟斤拷锟角ｏ拷"锟斤拷母"锟街凤拷锟侥硷拷锟斤拷歉锟斤拷锟斤拷址锟斤拷锟� Unicode 锟斤拷锟皆★拷 锟斤拷撕锟斤拷锟斤拷锟斤拷锟轿拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷玫锟接帮拷欤拷锟脚甲拷锟斤拷锟斤拷锟斤拷锟斤拷"锟斤拷母"锟斤拷锟皆碉拷锟街凤拷锟斤拷锟斤拷锟斤拷元锟斤拷锟斤拷锟斤拷 A锟斤拷?锟斤拷锟斤拷
Example #1 mb_strtolower() 锟斤拷锟斤拷
<?php
$str = "Mary Had A Little Lamb and She LOVED It So";
$str = mb_strtolower($str);
echo $str; // 锟斤拷锟斤拷锟� mary had a little lamb and she loved it so
?>
Example #2 锟斤拷锟斤拷锟斤拷 UTF-8 锟侥憋拷锟斤拷 mb_strtolower() 锟斤拷锟斤拷
<?php
$str = "锟斤拷?锟街ιστ︼拷 锟斤拷锟斤拷?锟叫η︼拷 锟铰︼拷锟斤拷?? 锟阶η︼拷?锟酵︼拷 锟矫︼拷, 锟侥ρ︼拷锟揭κε︼拷?锟狡ε︼拷 锟皆︼拷?锟斤拷 锟酵ωθρ︼拷? 锟绞υ︼拷??";
$str = mb_strtolower($str, 'UTF-8');
echo $str; // 锟斤拷锟� 锟斤拷?锟街ιστ︼拷 锟斤拷锟斤拷?锟叫η︼拷 锟铰︼拷锟斤拷?? 锟阶η︼拷?锟酵︼拷 锟矫︼拷, 锟侥ρ︼拷锟揭κε︼拷?锟狡ε︼拷 锟皆︼拷?锟斤拷 锟酵ωθρ︼拷? 锟绞υ︼拷??
?>