<?php
// 3456
echo substr ( "123456", 2, 4 );
echo "
";$str = "123";
// 不再使用echo $str[1];
echo $str ;
// this hello today
echo "this
hello
today";
// thisisme
echo "this", "is", "me";
echo "
";$str = "php";
$number = 232;
printf ( "%0.3f
", $number );
echo "
";$format = "the %2\$s book contains %1\$d pages. that's
a nice %2\$s full of %1\$d pages.
";printf ( $format, $number, $str );
// 12
// 6
$str = " php2 ";
echo strlen ( $str );
echo "
";echo strlen ( ltrim ( $str ) );
echo "
";// this is a test..
$str = "123 this is a test...";
echo ltrim ( $str, "0..9" );
echo "
";echo rtrim ( $str, "." );
// his is a test
echo trim ( $str, "0..9 a..z." );
echo "
";/*
* php3 ---php3--- ------php3
*/$str = "php3";
echo str_pad ( $str, 10 ); // 預設在右邊
echo "
";echo str_pad ( $str, 10, "-", str_pad_both );
echo "
";echo str_pad ( $str, 10, "-", str_pad_left );
echo "
";echo strtoupper ( $str );
echo "
";/*
* 1326702908
1128290400
1326720908
1327307708
1327592113
1327273200
1326582000
*/echo (strtotime ( "now" ));
echo "
";echo (strtotime ( "3 october 2005" ));
echo "
";echo (strtotime ( "+5 hours" ));
echo "
";echo (strtotime ( "+1 week" ));
echo "
";echo (strtotime ( "+1 week 3 days 7 hours 5 seconds" ));
echo "
";echo (strtotime ( "next monday" ));
echo "
";echo (strtotime ( "last sunday" ));
echo "
";//php3
echo ucfirst($str);
echo "
";//this is a test
echo ucwords("this is a test");
//echo ucfirst(strtolower($str));
echo "
";/*
* one line.
next line
*/echo nl2br("one line.\n next line");
echo "
";$str = "webserver:&'linux'&'apache'";
//webserver:&'linux'&'apache',黑體
echo $str."
";//不會有標籤效果
//webserver:&'linux'&'apache'
//原始碼：webserver:&'linux'&'apache'
echo htmlspecialchars($str,ent_compat,"utf-8");//轉換hmtl和雙引號
echo "
";$str = "乙個 'quote' 是bold";
//ò»¸ö 'quote' êçbold//htmlentities() 可以將所有非ascii碼字元轉化為 對應的實體**
//可以轉義更多的html字元
echo htmlentities($str);
echo "
";//$str = "乙個 'quote' 是bold";
//沒有出中文
echo htmlentities($str,ent_quotes,'utf-8');
echo phpinfo();
?>
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