PHP if... else 替代语法抛出“unexpected ':' in..."错误信息 [英] PHP if... else alternative syntax throwing "unexpected ':' in..." error message

问题描述

我需要一些有关以下替代 if-else 语法的帮助.我经常使用它，它的成功率为 99.999999%.在这里，出于某种原因，它没有:

if ( get_row_layout() == 'spacer' ) :$spaceheight = get_sub_field('spacer_height');//替代语法:if...else 没有冒号的语句//一旦这两行被删除或更改为if ( some//条件 ) : 一些东西；endif;" 语法 >> 错误去//离开.if ( $spaceheight && ( 0 !== $spaceheight ) )echo "<div class='basf-spacer' style='display: block; width: 100%; height: {$spaceheight}px; background: transparent; padding: 0; margin: 0; font-size: 0;行高:0;'></div>";elseif ( get_row_layout() == 'terms' ) ://一些其他的东西万一;

具体的错误信息是:解析错误:语法错误，意外的':' in...";并且在替代语法之后冒号是意外的，在 elseif ( get_row_layout() == 'terms' ) : 行中.

知道这里发生了什么吗?

<小时>

@antoni 建议的答案是替代语法不能混合使用.但在这种情况下，为什么会这样?:

if ( $terms_primcont || $terms_seccont ) : ?><div class="terms__body-wrap"><?phpif ( $terms_primcont ) echo "<div class='terms__primary'>{$terms_primcont}</div>";if ( $terms_seccont ) echo "<div class='terms__secondary'>{$terms_seccont}</div>";?>

<?php endif;

解决方案

发生这种情况是因为您混合了嵌套的 2 个语法 if.如果您这样做，它将起作用:

<小时>

问题编辑后:

它不能与 elseif 很好地混合在一起，你可以试试这个也有喙的:

$terms_primcont = 1;$terms_seccont = 1;如果( $terms_primcont || $terms_seccont ):echo "<div class=\"terms__body-wrap\">";如果( $terms_primcont )echo "<div class='terms__primary'>{$terms_primcont}</div>";如果( $terms_seccont )echo "<div class='terms__secondary'>{$terms_seccont}</div>";回声'</div>';否则 (1 === 2)//永远不要做某事.万一;

I need some help with the below alternative if-else syntax. I use this very frequently and it works with a 99.999999% success rate. Here, for some reason, it doesn't:

if ( get_row_layout() == 'spacer' ) : 

    $spaceheight = get_sub_field('spacer_height');

    // The Alternative Syntax: if... else statement without a colon
    // Once these two lines are removed OR changed into "if ( some
    // condition ) : some stuff; endif;" syntax >> the error goes
    // away. 
    if ( $spaceheight && ( 0 !== $spaceheight ) )
        echo "<div class='basf-spacer' style='display: block; width: 100%; height: {$spaceheight}px; background: transparent; padding: 0; margin: 0; font-size: 0; line-height: 0;'></div>";

elseif ( get_row_layout() == 'terms' ) :

    // Some other stuff

endif;

The specific error message is: "Parse error: syntax error, unexpected ':' in... "; and the colon is unexpected after the alternative syntax, in the elseif ( get_row_layout() == 'terms' ) : line.

Any idea what's happening here?

---

@antoni suggested the answer is that alternative syntaxes can't be mixed. But in this case why does this work?:

if ( $terms_primcont || $terms_seccont ) : ?>

    <div class="terms__body-wrap">

        <?php 
        if ( $terms_primcont ) echo "<div class='terms__primary'>{$terms_primcont}</div>";
        if ( $terms_seccont ) echo "<div class='terms__secondary'>{$terms_seccont}</div>";
        ?>

    </div>

<?php endif;

解决方案

This happens because you are mixing nested 2 syntaxes if. If you do this it will work:

<?php
function get_row_layout(){}

if ( get_row_layout() == 'spacer' ) :

    $spaceheight = get_sub_field('spacer_height');

    // The Alternative Syntax: if... else statement without a colon
    // Once these two lines are removed OR changed into "if ( some
    // condition ) : some stuff; endif;" syntax >> the error goes
    // away.
    if ( $spaceheight && ( 0 !== $spaceheight ) ) :
        echo "<div class='basf-spacer' style='display: block; width: 100%; height: {$spaceheight}px; background: transparent; padding: 0; margin: 0; font-size: 0; line-height: 0;'></div>";
    endif;
elseif ( get_row_layout() == 'terms' ) :

    // Some other stuff

endif;

?>

---

[EDIT] after question edit:

It doesn't mix well with elseif you can try this which also beaks:

$terms_primcont = 1;
$terms_seccont = 1;
if ( $terms_primcont || $terms_seccont ) :

    echo "<div class=\"terms__body-wrap\">";


        if ( $terms_primcont )
            echo "<div class='terms__primary'>{$terms_primcont}</div>";
        if ( $terms_seccont )
            echo "<div class='terms__secondary'>{$terms_seccont}</div>";


    echo '</div>';

elseif (1 === 2)
    // never do sth.
endif; 

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