104 lines
2.1 KiB
Markdown
104 lines
2.1 KiB
Markdown
Tag {foreach}
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=============
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The tag `{foreach}` construct provides an easy way to iterate over arrays and ranges.
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```smarty
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{foreach $list as [$key =>] $value [index=$index] [first=$first] [last=$last]}
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{* ...code... *}
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{break}
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{* ...code... *}
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{continue}
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{* ...code... *}
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{foreachelse}
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{* ...code... *}
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{/foreach}
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```
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### {foreach}
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On each iteration, the value of the current element is assigned to `$value` and the internal array pointer is
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advanced by one (so on the next iteration, you'll be looking at the next element).
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```smarty
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{foreach $list as $value}
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<div>{$value}</div>
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{/foreach}
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```
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The next form will additionally assign the current element's key to the `$key` variable on each iteration.
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```smarty
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{foreach $list as $key => $value}
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<div>{$key}: {$value}</div>
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{/foreach}
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```
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Gets the current array index, starting with zero.
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```smarty
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{foreach $list as $value}
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<div>№{$value@index}: {$value}</div>
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{/foreach}
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or
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{foreach $list as $value index=$index}
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<div>№{$index}: {$value}</div>
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{/foreach}
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```
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Detect first iteration:
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```smarty
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{foreach $list as $value}
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<div>{if $value@first} first item {/if} {$value}</div>
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{/foreach}
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or
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{foreach $list as $value first=$first}
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<div>{if $first} first item {/if} {$value}</div>
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{/foreach}
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```
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`$first` is `TRUE` if the current `{foreach}` iteration is first iteration.
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Detect last iteration:
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```smarty
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{foreach $list as $value}
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<div>{if $value@last} last item {/if} {$value}</div>
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{/foreach}
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or
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{foreach $list as $value last=$last}
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<div>{if $last} last item {/if} {$value}</div>
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{/foreach}
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```
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`$last` is set to `TRUE` if the current `{foreach}` iteration is last iteration.
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### {break}
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Tag `{break}` aborts the iteration.
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### {continue}
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Tag `{continue}` leaves the current iteration and begins with the next iteration.
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### {foreachelse}
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`{foreachelse}` is executed when there are no values in the array variable.
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```smarty
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{set $list = []}
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{foreach $list as $value}
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<div>{if $last} last item {/if} {$value}</div>
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{foreachelse}
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<div>empty</div>
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{/foreach}
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```
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`{foreachelse}` does not support tags `{break}` and `{continue}`. |