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PHP 函数
tryphp_function_default_arg
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<!DOCTYPE html> <html> <body> <?php function setHeight($minheight = 50) { echo "The height is : $minheight <br>"; } setHeight(350); setHeight(); setHeight(135); setHeight(80); ?> </body> </html>
The height is : 350
The height is : 50
The height is : 135
The height is : 80