strpos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior
strpos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior
laravel 字段设置为空
laravel 框架 数据迁移时，有些字段要设置为空的可以这样 $table->timestamp('email_verified_at')->nullable();如果是已经存在了该表的话，要改变字段的可以这样 $table->string('remark')->nullable()->change();
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