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                ## IF標簽 建議: ~~~ {if condition="$user.name neq 'ThinkPHP'"}ThinkPHP {else /} other Framework {/if} ~~~ ## 擴展: 用法示例: ~~~ {if condition="($name == 1) OR ($name > 100) "} value1 {elseif condition="$name eq 2"/}value2 {else /} value3 {/if} ~~~ 除此之外,我們可以在condition屬性里面使用php代碼,例如: ~~~ {if condition="strtoupper($user['name']) neq 'THINKPHP'"}ThinkPHP {else /} other Framework {/if} ~~~ condition屬性可以支持點語法和對象語法,例如: 自動判斷user變量是數組還是對象 ~~~ {if condition="$user.name neq 'ThinkPHP'"}ThinkPHP {else /} other Framework {/if} ~~~ 或者知道user變量是對象 ~~~ {if condition="$user:name neq 'ThinkPHP'"}ThinkPHP {else /} other Framework {/if} ~~~ 由于if標簽的condition屬性里面基本上使用的是php語法,盡可能使用判斷標簽和Switch標簽會更加簡潔,原則上來說,能夠用switch和比較標簽解決的盡量不用if標簽完成。因為switch和比較標簽可以使用變量調節器和系統變量。如果某些特殊的要求下面,IF標簽仍然無法滿足要求的話,可以使用原生php代碼或者PHP標簽來直接書寫代碼。 簡潔的用法 ~~~ {if condition="表達式"} {if (表達式)} {if 表達式} ~~~ 這三種寫法結果是一樣的
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