rfc:array_key_first_last_index
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| Both sides previous revisionPrevious revision | Next revisionBoth sides next revision | ||
| rfc:array_key_first_last_index [2016/01/01 20:11] – jbafford | rfc:array_key_first_last_index [2016/01/01 20:19] – jbafford | ||
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| ===== Proposal ===== | ===== Proposal ===== | ||
| + | Arrays in php are ordered maps, but there is no convenient way to | ||
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| array_key_first() returns the first key in an array. | array_key_first() returns the first key in an array. | ||
| Line 63: | Line 65: | ||
| With the reference implementation provided below, array_key_first() and array_key_last() directly retrieve the array key from the underlying hash (by setting a local hash pointer to the start/end of the array and retrieving the key for that index). By necessity, array_key_index() iterates through the keys, but does so in C code, rather than in PHP code. | With the reference implementation provided below, array_key_first() and array_key_last() directly retrieve the array key from the underlying hash (by setting a local hash pointer to the start/end of the array and retrieving the key for that index). By necessity, array_key_index() iterates through the keys, but does so in C code, rather than in PHP code. | ||
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| + | In the proposed PR implementing this functionality (see below), array_key_first() and array_key_last() are implemented in terms of array_key_index(); | ||
| ===== Backward Incompatible Changes ===== | ===== Backward Incompatible Changes ===== | ||
| Line 91: | Line 95: | ||
| - a link to the git commit(s) | - a link to the git commit(s) | ||
| - a link to the PHP manual entry for the feature | - a link to the PHP manual entry for the feature | ||
| - | |||
rfc/array_key_first_last_index.txt · Last modified: 2017/09/22 13:28 by 127.0.0.1