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PHP - 修改字符串
tryphp_string_trim
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<!DOCTYPE html> <html> <body> <?php $x = " Hello World! "; echo trim($x); ?> <p>The whitespaces are invisible in plain HTML,<br> but check out the difference in two input fields:</p> <?php echo "<input value='" . $x . "'>"; echo "<br>"; echo "<input value='" . trim($x) . "'>"; ?> </body> </html>
Hello World!
The whitespaces are invisible in plain HTML,
but check out the difference in two input fields: