{"id":3975,"date":"2020-07-22T13:52:37","date_gmt":"2020-07-22T05:52:37","guid":{"rendered":"https:\/\/www.webteach.tw\/?p=3975"},"modified":"2020-07-22T13:52:37","modified_gmt":"2020-07-22T05:52:37","slug":"is_numeric-is_int","status":"publish","type":"post","link":"https:\/\/www.webteach.tw\/?p=3975","title":{"rendered":"[ PHP ] &#8211; is_numeric() \u8207 is_int() \u5dee\u7570"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">is_numeric() \u8207 is_int() \u9019\u5169\u500b\u51fd\u5f0f\u90fd\u662f\u53bb\u5224\u65b7\u8b8a\u6578\u662f\u5426\u70ba\u6578\u5b57\uff0c\u770b\u4f86\u597d\u50cf\u5dee\u4e0d\u591a\u7528\u7684\uff0c\u4f46\u5176\u5be6\u4ed6\u5011\u4e4b\u9593\u662f\u5b58\u5728\u5dee\u7570\u6027\u7684\uff1b\u8acb\u770b\u4ee5\u4e0b\u7a0b\u5f0f\u7bc4\u4f8b\u3002<\/p>\n\n\n<pre class=\"wp-block-syntaxhighlighter-code\">$check=array('12345',12345,123.45,'12345abc');\necho ' array(\\'12345\\',12345,123.45,\\'12345abc\\')) &lt;br>';\nforeach($check as $value){\n\techo '( '.gettype($value).' ) '.$value.' is_numeric ? : '.(is_numeric($value)?'TRUE':'FALSE').'&lt;br>';\n\techo '( '.gettype($value).' ) '.$value.' is_int ? : '.(is_int($value)?'TRUE':'FALSE').'&lt;br>';\n}\n\/\/PHP \u6709\u500b\u7279\u6027 \u5728\u4f7f\u7528 is_xxx \u51fd\u5f0f\u6642\uff0c\u82e5\u76f4\u63a5echo \u5224\u65b7\u7d50\u679c true \u7684\u8a71 \u6703\u8f38\u51fa 1 false \u5247\u662f \u7a7a\u5b57\u4e32\n\/\/\u6240\u4ee5\u6211\u5011\u8981\u5728\u5224\u65b7\u5f0f\u5f8c\u9762\u81ea\u884c\u52a0\u4e0a\u4e0d\u540c\u7d50\u679c\u6240\u8981\u56de\u50b3\u7684\u5b57\u4e32 'TRUE':'FALSE'\n\/\/gettype \u51fd\u5f0f\u70ba\u53d6\u5f97\u8b8a\u6578\u578b\u614b\n\/\/\u986f\u793a\u7d50\u679c\n\/*\narray('12345',12345,123.45,'12345abc'))\n( string ) 12345 is_numeric ? : TRUE\n( string ) 12345 is_int ? : FALSE\n( integer ) 12345 is_numeric ? : TRUE\n( integer ) 12345 is_int ? : TRUE\n( double ) 123.45 is_numeric ? : TRUE\n( double ) 123.45 is_int ? : FALSE\n( string ) 12345abc is_numeric ? : FALSE\n( string ) 12345abc is_int ? : FALSE\n*\/\n\/\/\u767c\u73fe\u6709\u5dee\u7570\u7684\u5730\u65b9\u4e86\u55ce\uff1f( string ) 12345 is_numeric ? : TRUE \u9019\u61c9\u8a72\u4e0d\u662f\u6211\u5011\u60f3\u8981\u7684\u7d50\u679c<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>is_numeric() \u8207 is_int() \u9019\u5169\u500b\u51fd\u5f0f\u90fd\u662f\u53bb\u5224\u65b7\u8b8a\u6578\u662f\u5426\u70ba\u6578\u5b57\uff0c\u770b\u4f86\u597d\u50cf\u5dee\u4e0d\u591a\u7528\u7684\uff0c\u4f46\u5176\u5be6\u4ed6\u5011\u4e4b\u9593\u662f\u5b58\u5728\u5dee\u7570\u6027\u7684\uff1b\u8acb\u770b\u4ee5\u4e0b\u7a0b\u5f0f\u7bc4\u4f8b\u3002<\/p>\n","protected":false},"author":1,"featured_media":2201,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[335,337,448,692,905,906],"class_list":["post-3975","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php","tag-is_int","tag-is_numeric","tag-php","tag-692","tag-905","tag-906","hvn-theme-has-thumbnail"],"_links":{"self":[{"href":"https:\/\/www.webteach.tw\/index.php?rest_route=\/wp\/v2\/posts\/3975","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.webteach.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.webteach.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.webteach.tw\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.webteach.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3975"}],"version-history":[{"count":0,"href":"https:\/\/www.webteach.tw\/index.php?rest_route=\/wp\/v2\/posts\/3975\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.webteach.tw\/index.php?rest_route=\/wp\/v2\/media\/2201"}],"wp:attachment":[{"href":"https:\/\/www.webteach.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.webteach.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.webteach.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}